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clang-p2996/llvm/test/Transforms/InstCombine/vector-reverse.ll
Nikita Popov a105877646 [InstCombine] Remove some of the complexity-based canonicalization (#91185) 
The idea behind this canonicalization is that it allows us to handle less
patterns, because we know that some will be canonicalized away. This is
indeed very useful to e.g. know that constants are always on the right.

However, this is only useful if the canonicalization is actually
reliable. This is the case for constants, but not for arguments: Moving
these to the right makes it look like the "more complex" expression is
guaranteed to be on the left, but this is not actually the case in
practice. It fails as soon as you replace the argument with another
instruction.

The end result is that it looks like things correctly work in tests,
while they actually don't. We use the "thwart complexity-based
canonicalization" trick to handle this in tests, but it's often a
challenge for new contributors to get this right, and based on the
regressions this PR originally exposed, we clearly don't get this right
in many cases.

For this reason, I think that it's better to remove this complexity
canonicalization. It will make it much easier to write tests for
commuted cases and make sure that they are handled.
2024-08-21 12:02:54 +02:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
; Tests to ensure operand reversals are bubbled to the result when there is no
; increase in the total number of reversals. Often this resuls in back to back
; reversals that can be eliminated entirely. This outcome is tested separately.
define <vscale x 4 x i32> @binop_reverse(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse(
; CHECK-NEXT: [[ADD1:%.*]] = add nsw <vscale x 4 x i32> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[ADD]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%add = add nsw <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i32> %add
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_1(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[ADD1:%.*]] = add <vscale x 4 x i32> [[A]], [[B:%.*]]
; CHECK-NEXT: [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[ADD]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%add = add <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i32> %add
}
; %b.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_2(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_2(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[ADD1:%.*]] = add <vscale x 4 x i32> [[A:%.*]], [[B]]
; CHECK-NEXT: [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[ADD]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%add = add <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i32> %add
}
; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @binop_reverse_3(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_3(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[ADD:%.*]] = add <vscale x 4 x i32> [[A_REV]], [[B_REV]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[ADD]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%add = add <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i32> %add
}
; %a.rev used as both operands
define <vscale x 4 x i32> @binop_reverse_4(<vscale x 4 x i32> %a) {
; CHECK-LABEL: @binop_reverse_4(
; CHECK-NEXT: [[MUL1:%.*]] = mul <vscale x 4 x i32> [[A:%.*]], [[A]]
; CHECK-NEXT: [[MUL:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[MUL1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[MUL]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%mul = mul <vscale x 4 x i32> %a.rev, %a.rev
ret <vscale x 4 x i32> %mul
}
; %a.rev used as both operands along with a third use
define <vscale x 4 x i32> @binop_reverse_5(<vscale x 4 x i32> %a) {
; CHECK-LABEL: @binop_reverse_5(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[MUL:%.*]] = mul <vscale x 4 x i32> [[A_REV]], [[A_REV]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[MUL]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%mul = mul <vscale x 4 x i32> %a.rev, %a.rev
ret <vscale x 4 x i32> %mul
}
define <vscale x 4 x i32> @binop_reverse_splat_RHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_RHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[DIV1:%.*]] = udiv <vscale x 4 x i32> [[A:%.*]], [[B_SPLAT]]
; CHECK-NEXT: [[DIV:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[DIV1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[DIV]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%div = udiv <vscale x 4 x i32> %a.rev, %b.splat
ret <vscale x 4 x i32> %div
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_splat_RHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_RHS_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[DIV:%.*]] = udiv <vscale x 4 x i32> [[A_REV]], [[B_SPLAT]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[DIV]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%div = udiv <vscale x 4 x i32> %a.rev, %b.splat
ret <vscale x 4 x i32> %div
}
define <vscale x 4 x i32> @binop_reverse_splat_LHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_LHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[DIV1:%.*]] = udiv <vscale x 4 x i32> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT: [[DIV:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[DIV1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[DIV]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%div = udiv <vscale x 4 x i32> %b.splat, %a.rev
ret <vscale x 4 x i32> %div
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_splat_LHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_LHS_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[DIV:%.*]] = udiv <vscale x 4 x i32> [[B_SPLAT]], [[A_REV]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[DIV]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%div = udiv <vscale x 4 x i32> %b.splat, %a.rev
ret <vscale x 4 x i32> %div
}
define <vscale x 4 x float> @unop_reverse(<vscale x 4 x float> %a) {
; CHECK-LABEL: @unop_reverse(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> [[A:%.*]])
; CHECK-NEXT: [[NEG:%.*]] = fneg fast <vscale x 4 x float> [[A_REV]]
; CHECK-NEXT: ret <vscale x 4 x float> [[NEG]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%neg = fneg fast <vscale x 4 x float> %a.rev
ret <vscale x 4 x float> %neg
}
; %a.rev has multiple uses
define <vscale x 4 x float> @unop_reverse_1(<vscale x 4 x float> %a) {
; CHECK-LABEL: @unop_reverse_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> [[A:%.*]])
; CHECK-NEXT: call void @use_nxv4f32(<vscale x 4 x float> [[A_REV]])
; CHECK-NEXT: [[NEG:%.*]] = fneg fast <vscale x 4 x float> [[A_REV]]
; CHECK-NEXT: ret <vscale x 4 x float> [[NEG]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
call void @use_nxv4f32(<vscale x 4 x float> %a.rev)
%neg = fneg fast <vscale x 4 x float> %a.rev
ret <vscale x 4 x float> %neg
}
define <vscale x 4 x i1> @icmp_reverse(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse(
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i1> %cmp
}
; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_1(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A]], [[B:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i1> %cmp
}
; %b.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_2(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_2(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A:%.*]], [[B]]
; CHECK-NEXT: [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i1> %cmp
}
; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i1> @icmp_reverse_3(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_3(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <vscale x 4 x i32> [[A_REV]], [[B_REV]]
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
ret <vscale x 4 x i1> %cmp
}
define <vscale x 4 x i1> @icmp_reverse_splat_RHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_RHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt <vscale x 4 x i32> [[A:%.*]], [[B_SPLAT]]
; CHECK-NEXT: [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%cmp = icmp sgt <vscale x 4 x i32> %a.rev, %b.splat
ret <vscale x 4 x i1> %cmp
}
; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_splat_RHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_RHS_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <vscale x 4 x i32> [[A_REV]], [[B_SPLAT]]
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%cmp = icmp sgt <vscale x 4 x i32> %a.rev, %b.splat
ret <vscale x 4 x i1> %cmp
}
define <vscale x 4 x i1> @icmp_reverse_splat_LHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_LHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[CMP1:%.*]] = icmp ult <vscale x 4 x i32> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT: [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%cmp = icmp ult <vscale x 4 x i32> %b.splat, %a.rev
ret <vscale x 4 x i1> %cmp
}
; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_splat_LHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_LHS_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT: [[CMP:%.*]] = icmp ult <vscale x 4 x i32> [[B_SPLAT]], [[A_REV]]
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP]]
;
%a.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
%b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
%b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
%cmp = icmp ult <vscale x 4 x i32> %b.splat, %a.rev
ret <vscale x 4 x i1> %cmp
}
define <vscale x 4 x i32> @select_reverse(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse(
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_2(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %c.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_3(
; CHECK-NEXT: [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_4(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_4(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %a.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_5(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_5(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %b.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_6(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_6(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
; %a.rev, %b.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_7(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_7(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT: [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[B_REV]], <vscale x 4 x i32> [[C_REV]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
ret <vscale x 4 x i32> %select
}
define <vscale x 4 x i32> @select_reverse_splat_false(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false(
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
ret <vscale x 4 x i32> %select
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
ret <vscale x 4 x i32> %select
}
; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_2(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
ret <vscale x 4 x i32> %select
}
; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_3(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[B_REV]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
ret <vscale x 4 x i32> %select
}
define <vscale x 4 x i32> @select_reverse_splat_true(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true(
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
ret <vscale x 4 x i32> %select
}
; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_1(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B:%.*]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
ret <vscale x 4 x i32> %select
}
; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_2(
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B]]
; CHECK-NEXT: [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
ret <vscale x 4 x i32> %select
}
; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_3(
; CHECK-NEXT: [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT: [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT: [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT: [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT: call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT: [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B_REV]]
; CHECK-NEXT: ret <vscale x 4 x i32> [[SELECT]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
%c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
%c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
%select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
ret <vscale x 4 x i32> %select
}
; Tests to ensure no reversals exist when all operands are reversed and the
; result is also reversed.
define <vscale x 4 x float> @reverse_binop_reverse(<vscale x 4 x float> %a, <vscale x 4 x float> %b) {
; CHECK-LABEL: @reverse_binop_reverse(
; CHECK-NEXT: [[ADD1:%.*]] = fadd <vscale x 4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret <vscale x 4 x float> [[ADD1]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%b.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
%add = fadd <vscale x 4 x float> %a.rev, %b.rev
%add.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %add)
ret <vscale x 4 x float> %add.rev
}
define <vscale x 4 x float> @reverse_binop_reverse_splat_RHS(<vscale x 4 x float> %a, float %b) {
; CHECK-LABEL: @reverse_binop_reverse_splat_RHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x float> [[B_INSERT]], <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[DIV1:%.*]] = fdiv <vscale x 4 x float> [[A:%.*]], [[B_SPLAT]]
; CHECK-NEXT: ret <vscale x 4 x float> [[DIV1]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%b.insert = insertelement <vscale x 4 x float> poison, float %b, i32 0
%b.splat = shufflevector <vscale x 4 x float> %b.insert, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
%div = fdiv <vscale x 4 x float> %a.rev, %b.splat
%div.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %div)
ret <vscale x 4 x float> %div.rev
}
define <vscale x 4 x float> @reverse_binop_reverse_splat_LHS(<vscale x 4 x float> %a, float %b) {
; CHECK-LABEL: @reverse_binop_reverse_splat_LHS(
; CHECK-NEXT: [[B_INSERT:%.*]] = insertelement <vscale x 4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT: [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x float> [[B_INSERT]], <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT: [[DIV1:%.*]] = fdiv <vscale x 4 x float> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT: ret <vscale x 4 x float> [[DIV1]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%b.insert = insertelement <vscale x 4 x float> poison, float %b, i32 0
%b.splat = shufflevector <vscale x 4 x float> %b.insert, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
%div = fdiv <vscale x 4 x float> %b.splat, %a.rev
%div.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %div)
ret <vscale x 4 x float> %div.rev
}
define <vscale x 4 x i1> @reverse_fcmp_reverse(<vscale x 4 x float> %a, <vscale x 4 x float> %b) {
; CHECK-LABEL: @reverse_fcmp_reverse(
; CHECK-NEXT: [[CMP1:%.*]] = fcmp fast olt <vscale x 4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret <vscale x 4 x i1> [[CMP1]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%b.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
%cmp = fcmp fast olt <vscale x 4 x float> %a.rev, %b.rev
%cmp.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %cmp)
ret <vscale x 4 x i1> %cmp.rev
}
define <vscale x 4 x float> @reverse_select_reverse(<vscale x 4 x i1> %a, <vscale x 4 x float> %b, <vscale x 4 x float> %c) {
; CHECK-LABEL: @reverse_select_reverse(
; CHECK-NEXT: [[SELECT1:%.*]] = select fast <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x float> [[B:%.*]], <vscale x 4 x float> [[C:%.*]]
; CHECK-NEXT: ret <vscale x 4 x float> [[SELECT1]]
;
%a.rev = tail call <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
%b.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
%c.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %c)
%select = select fast <vscale x 4 x i1> %a.rev, <vscale x 4 x float> %b.rev, <vscale x 4 x float> %c.rev
%select.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %select)
ret <vscale x 4 x float> %select.rev
}
define <vscale x 4 x float> @reverse_unop_reverse(<vscale x 4 x float> %a) {
; CHECK-LABEL: @reverse_unop_reverse(
; CHECK-NEXT: [[NEG1:%.*]] = fneg <vscale x 4 x float> [[A:%.*]]
; CHECK-NEXT: ret <vscale x 4 x float> [[NEG1]]
;
%a.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
%neg = fneg <vscale x 4 x float> %a.rev
%neg.rev = tail call <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float> %neg)
ret <vscale x 4 x float> %neg.rev
}
declare void @use_nxv4i1(<vscale x 4 x i1>)
declare void @use_nxv4i32(<vscale x 4 x i32>)
declare void @use_nxv4f32(<vscale x 4 x float>)
declare <vscale x 4 x i1> @llvm.vector.reverse.nxv4i1(<vscale x 4 x i1>)
declare <vscale x 4 x i32> @llvm.vector.reverse.nxv4i32(<vscale x 4 x i32>)
declare <vscale x 4 x float> @llvm.vector.reverse.nxv4f32(<vscale x 4 x float>)
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