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clang-p2996/llvm/test/Transforms/InstCombine/vector-casts.ll
Sanjay Patel fe9705149b [InstCombine] shrink truncated insertelement into undef vector 
This is the 2nd part of solving:
http://lists.llvm.org/pipermail/llvm-dev/2017-February/110293.html

D30123 moves the trunc ahead of the shuffle, and this moves the trunc ahead of the insertelement. 
We're limiting this transform to undef rather than any constant to avoid backend problems.

Differential Revision: https://reviews.llvm.org/D30137

llvm-svn: 297242
2017-03-07 23:27:14 +00:00

307 lines
11 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
; This turns into a&1 != 0
define <2 x i1> @test1(<2 x i64> %a) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i64> %a, <i64 1, i64 1>
; CHECK-NEXT: [[T:%.*]] = icmp ne <2 x i64> [[TMP1]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[T]]
;
%t = trunc <2 x i64> %a to <2 x i1>
ret <2 x i1> %t
}
; The ashr turns into an lshr.
define <2 x i64> @test2(<2 x i64> %a) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[B:%.*]] = and <2 x i64> %a, <i64 65535, i64 65535>
; CHECK-NEXT: [[T:%.*]] = lshr <2 x i64> [[B]], <i64 1, i64 1>
; CHECK-NEXT: ret <2 x i64> [[T]]
;
%b = and <2 x i64> %a, <i64 65535, i64 65535>
%t = ashr <2 x i64> %b, <i64 1, i64 1>
ret <2 x i64> %t
}
define <2 x i64> @test3(<4 x float> %a, <4 x float> %b) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[TMP1:%.*]] = fcmp ord <4 x float> %a, %b
; CHECK-NEXT: [[AND:%.*]] = sext <4 x i1> [[TMP1]] to <4 x i32>
; CHECK-NEXT: [[CONV:%.*]] = bitcast <4 x i32> [[AND]] to <2 x i64>
; CHECK-NEXT: ret <2 x i64> [[CONV]]
;
%cmp = fcmp ord <4 x float> %a, zeroinitializer
%sext = sext <4 x i1> %cmp to <4 x i32>
%cmp4 = fcmp ord <4 x float> %b, zeroinitializer
%sext5 = sext <4 x i1> %cmp4 to <4 x i32>
%and = and <4 x i32> %sext, %sext5
%conv = bitcast <4 x i32> %and to <2 x i64>
ret <2 x i64> %conv
}
define <2 x i64> @test4(<4 x float> %a, <4 x float> %b) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[TMP1:%.*]] = fcmp uno <4 x float> %a, %b
; CHECK-NEXT: [[OR:%.*]] = sext <4 x i1> [[TMP1]] to <4 x i32>
; CHECK-NEXT: [[CONV:%.*]] = bitcast <4 x i32> [[OR]] to <2 x i64>
; CHECK-NEXT: ret <2 x i64> [[CONV]]
;
%cmp = fcmp uno <4 x float> %a, zeroinitializer
%sext = sext <4 x i1> %cmp to <4 x i32>
%cmp4 = fcmp uno <4 x float> %b, zeroinitializer
%sext5 = sext <4 x i1> %cmp4 to <4 x i32>
%or = or <4 x i32> %sext, %sext5
%conv = bitcast <4 x i32> %or to <2 x i64>
ret <2 x i64> %conv
}
; rdar://7434900
define <2 x i64> @test5(<4 x float> %a, <4 x float> %b) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: [[CMP:%.*]] = fcmp ult <4 x float> %a, zeroinitializer
; CHECK-NEXT: [[CMP4:%.*]] = fcmp ult <4 x float> %b, zeroinitializer
; CHECK-NEXT: [[NARROW:%.*]] = and <4 x i1> [[CMP4]], [[CMP]]
; CHECK-NEXT: [[AND:%.*]] = sext <4 x i1> [[NARROW]] to <4 x i32>
; CHECK-NEXT: [[CONV:%.*]] = bitcast <4 x i32> [[AND]] to <2 x i64>
; CHECK-NEXT: ret <2 x i64> [[CONV]]
;
%cmp = fcmp ult <4 x float> %a, zeroinitializer
%sext = sext <4 x i1> %cmp to <4 x i32>
%cmp4 = fcmp ult <4 x float> %b, zeroinitializer
%sext5 = sext <4 x i1> %cmp4 to <4 x i32>
%and = and <4 x i32> %sext, %sext5
%conv = bitcast <4 x i32> %and to <2 x i64>
ret <2 x i64> %conv
}
define void @convert(<2 x i32>* %dst.addr, <2 x i64> %src) {
; CHECK-LABEL: @convert(
; CHECK-NEXT: [[VAL:%.*]] = trunc <2 x i64> %src to <2 x i32>
; CHECK-NEXT: [[ADD:%.*]] = add <2 x i32> [[VAL]], <i32 1, i32 1>
; CHECK-NEXT: store <2 x i32> [[ADD]], <2 x i32>* %dst.addr, align 8
; CHECK-NEXT: ret void
;
%val = trunc <2 x i64> %src to <2 x i32>
%add = add <2 x i32> %val, <i32 1, i32 1>
store <2 x i32> %add, <2 x i32>* %dst.addr
ret void
}
define <2 x i65> @foo(<2 x i64> %t) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: [[TMP1:%.*]] = and <2 x i64> %t, <i64 4294967295, i64 4294967295>
; CHECK-NEXT: [[B:%.*]] = zext <2 x i64> [[TMP1]] to <2 x i65>
; CHECK-NEXT: ret <2 x i65> [[B]]
;
%a = trunc <2 x i64> %t to <2 x i32>
%b = zext <2 x i32> %a to <2 x i65>
ret <2 x i65> %b
}
define <2 x i64> @bar(<2 x i65> %t) {
; CHECK-LABEL: @bar(
; CHECK-NEXT: [[A:%.*]] = trunc <2 x i65> %t to <2 x i64>
; CHECK-NEXT: [[B:%.*]] = and <2 x i64> [[A]], <i64 4294967295, i64 4294967295>
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = trunc <2 x i65> %t to <2 x i32>
%b = zext <2 x i32> %a to <2 x i64>
ret <2 x i64> %b
}
define <2 x i64> @bars(<2 x i65> %t) {
; CHECK-LABEL: @bars(
; CHECK-NEXT: [[A:%.*]] = trunc <2 x i65> %t to <2 x i64>
; CHECK-NEXT: [[SEXT:%.*]] = shl <2 x i64> [[A]], <i64 32, i64 32>
; CHECK-NEXT: [[B:%.*]] = ashr exact <2 x i64> [[SEXT]], <i64 32, i64 32>
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = trunc <2 x i65> %t to <2 x i32>
%b = sext <2 x i32> %a to <2 x i64>
ret <2 x i64> %b
}
define <2 x i64> @quxs(<2 x i64> %t) {
; CHECK-LABEL: @quxs(
; CHECK-NEXT: [[SEXT:%.*]] = shl <2 x i64> %t, <i64 32, i64 32>
; CHECK-NEXT: [[B:%.*]] = ashr exact <2 x i64> [[SEXT]], <i64 32, i64 32>
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = trunc <2 x i64> %t to <2 x i32>
%b = sext <2 x i32> %a to <2 x i64>
ret <2 x i64> %b
}
define <2 x i64> @quxt(<2 x i64> %t) {
; CHECK-LABEL: @quxt(
; CHECK-NEXT: [[A:%.*]] = shl <2 x i64> %t, <i64 32, i64 32>
; CHECK-NEXT: [[B:%.*]] = ashr exact <2 x i64> [[A]], <i64 32, i64 32>
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = shl <2 x i64> %t, <i64 32, i64 32>
%b = ashr <2 x i64> %a, <i64 32, i64 32>
ret <2 x i64> %b
}
define <2 x double> @fa(<2 x double> %t) {
; CHECK-LABEL: @fa(
; CHECK-NEXT: [[A:%.*]] = fptrunc <2 x double> %t to <2 x float>
; CHECK-NEXT: [[B:%.*]] = fpext <2 x float> [[A]] to <2 x double>
; CHECK-NEXT: ret <2 x double> [[B]]
;
%a = fptrunc <2 x double> %t to <2 x float>
%b = fpext <2 x float> %a to <2 x double>
ret <2 x double> %b
}
define <2 x double> @fb(<2 x double> %t) {
; CHECK-LABEL: @fb(
; CHECK-NEXT: [[A:%.*]] = fptoui <2 x double> %t to <2 x i64>
; CHECK-NEXT: [[B:%.*]] = uitofp <2 x i64> [[A]] to <2 x double>
; CHECK-NEXT: ret <2 x double> [[B]]
;
%a = fptoui <2 x double> %t to <2 x i64>
%b = uitofp <2 x i64> %a to <2 x double>
ret <2 x double> %b
}
define <2 x double> @fc(<2 x double> %t) {
; CHECK-LABEL: @fc(
; CHECK-NEXT: [[A:%.*]] = fptosi <2 x double> %t to <2 x i64>
; CHECK-NEXT: [[B:%.*]] = sitofp <2 x i64> [[A]] to <2 x double>
; CHECK-NEXT: ret <2 x double> [[B]]
;
%a = fptosi <2 x double> %t to <2 x i64>
%b = sitofp <2 x i64> %a to <2 x double>
ret <2 x double> %b
}
; PR9228
define <4 x float> @f(i32 %a) {
; CHECK-LABEL: @f(
; CHECK-NEXT: ret <4 x float> undef
;
%dim = insertelement <4 x i32> undef, i32 %a, i32 0
%dim30 = insertelement <4 x i32> %dim, i32 %a, i32 1
%dim31 = insertelement <4 x i32> %dim30, i32 %a, i32 2
%dim32 = insertelement <4 x i32> %dim31, i32 %a, i32 3
%offset_ptr = getelementptr <4 x float>, <4 x float>* null, i32 1
%offset_int = ptrtoint <4 x float>* %offset_ptr to i64
%sizeof32 = trunc i64 %offset_int to i32
%smearinsert33 = insertelement <4 x i32> undef, i32 %sizeof32, i32 0
%smearinsert34 = insertelement <4 x i32> %smearinsert33, i32 %sizeof32, i32 1
%smearinsert35 = insertelement <4 x i32> %smearinsert34, i32 %sizeof32, i32 2
%smearinsert36 = insertelement <4 x i32> %smearinsert35, i32 %sizeof32, i32 3
%delta_scale = mul <4 x i32> %dim32, %smearinsert36
%offset_delta = add <4 x i32> zeroinitializer, %delta_scale
%offset_varying_delta = add <4 x i32> %offset_delta, undef
ret <4 x float> undef
}
define <8 x i32> @pr24458(<8 x float> %n) {
; CHECK-LABEL: @pr24458(
; CHECK-NEXT: ret <8 x i32> <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1>
;
%notequal_b_load_.i = fcmp une <8 x float> %n, zeroinitializer
%equal_a_load72_.i = fcmp ueq <8 x float> %n, zeroinitializer
%notequal_b_load__to_boolvec.i = sext <8 x i1> %notequal_b_load_.i to <8 x i32>
%equal_a_load72__to_boolvec.i = sext <8 x i1> %equal_a_load72_.i to <8 x i32>
%wrong = or <8 x i32> %notequal_b_load__to_boolvec.i, %equal_a_load72__to_boolvec.i
ret <8 x i32> %wrong
}
; Hoist a trunc to a scalar if we're inserting into an undef vector.
; trunc (inselt undef, X, Index) --> inselt undef, (trunc X), Index
define <3 x i16> @trunc_inselt_undef(i32 %x) {
; CHECK-LABEL: @trunc_inselt_undef(
; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %x to i16
; CHECK-NEXT: [[TRUNC:%.*]] = insertelement <3 x i16> undef, i16 [[TMP1]], i32 1
; CHECK-NEXT: ret <3 x i16> [[TRUNC]]
;
%vec = insertelement <3 x i32> undef, i32 %x, i32 1
%trunc = trunc <3 x i32> %vec to <3 x i16>
ret <3 x i16> %trunc
}
; Hoist a trunc to a scalar if we're inserting into an undef vector.
; trunc (inselt undef, X, Index) --> inselt undef, (trunc X), Index
define <2 x float> @fptrunc_inselt_undef(double %x, i32 %index) {
; CHECK-LABEL: @fptrunc_inselt_undef(
; CHECK-NEXT: [[TMP1:%.*]] = fptrunc double %x to float
; CHECK-NEXT: [[TRUNC:%.*]] = insertelement <2 x float> undef, float [[TMP1]], i32 %index
; CHECK-NEXT: ret <2 x float> [[TRUNC]]
;
%vec = insertelement <2 x double> <double undef, double undef>, double %x, i32 %index
%trunc = fptrunc <2 x double> %vec to <2 x float>
ret <2 x float> %trunc
}
; TODO: Strengthen the backend, so we can have this canonicalization.
; Insert a scalar int into a constant vector and truncate:
; trunc (inselt C, X, Index) --> inselt C, (trunc X), Index
define <3 x i16> @trunc_inselt1(i32 %x) {
; CHECK-LABEL: @trunc_inselt1(
; CHECK-NEXT: [[VEC:%.*]] = insertelement <3 x i32> <i32 3, i32 undef, i32 65536>, i32 %x, i32 1
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <3 x i32> [[VEC]] to <3 x i16>
; CHECK-NEXT: ret <3 x i16> [[TRUNC]]
;
%vec = insertelement <3 x i32> <i32 3, i32 -2, i32 65536>, i32 %x, i32 1
%trunc = trunc <3 x i32> %vec to <3 x i16>
ret <3 x i16> %trunc
}
; TODO: Strengthen the backend, so we can have this canonicalization.
; Insert a scalar FP into a constant vector and FP truncate:
; fptrunc (inselt C, X, Index) --> inselt C, (fptrunc X), Index
define <2 x float> @fptrunc_inselt1(double %x, i32 %index) {
; CHECK-LABEL: @fptrunc_inselt1(
; CHECK-NEXT: [[VEC:%.*]] = insertelement <2 x double> <double undef, double 3.000000e+00>, double %x, i32 %index
; CHECK-NEXT: [[TRUNC:%.*]] = fptrunc <2 x double> [[VEC]] to <2 x float>
; CHECK-NEXT: ret <2 x float> [[TRUNC]]
;
%vec = insertelement <2 x double> <double undef, double 3.0>, double %x, i32 %index
%trunc = fptrunc <2 x double> %vec to <2 x float>
ret <2 x float> %trunc
}
; TODO: Strengthen the backend, so we can have this canonicalization.
; Insert a scalar int constant into a vector and truncate:
; trunc (inselt X, C, Index) --> inselt (trunc X), C', Index
define <8 x i16> @trunc_inselt2(<8 x i32> %x, i32 %index) {
; CHECK-LABEL: @trunc_inselt2(
; CHECK-NEXT: [[VEC:%.*]] = insertelement <8 x i32> %x, i32 1048576, i32 %index
; CHECK-NEXT: [[TRUNC:%.*]] = trunc <8 x i32> [[VEC]] to <8 x i16>
; CHECK-NEXT: ret <8 x i16> [[TRUNC]]
;
%vec = insertelement <8 x i32> %x, i32 1048576, i32 %index
%trunc = trunc <8 x i32> %vec to <8 x i16>
ret <8 x i16> %trunc
}
; TODO: Strengthen the backend, so we can have this canonicalization.
; Insert a scalar FP constant into a vector and FP truncate:
; fptrunc (inselt X, C, Index) --> inselt (fptrunc X), C', Index
define <3 x float> @fptrunc_inselt2(<3 x double> %x) {
; CHECK-LABEL: @fptrunc_inselt2(
; CHECK-NEXT: [[VEC:%.*]] = insertelement <3 x double> %x, double 4.000000e+00, i32 2
; CHECK-NEXT: [[TRUNC:%.*]] = fptrunc <3 x double> [[VEC]] to <3 x float>
; CHECK-NEXT: ret <3 x float> [[TRUNC]]
;
%vec = insertelement <3 x double> %x, double 4.0, i32 2
%trunc = fptrunc <3 x double> %vec to <3 x float>
ret <3 x float> %trunc
}
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