e6ad9ef4e7
The basic idea to this is that a) having a single canonical type makes CSE easier, and b) many of our transforms are inconsistent about which types we end up with based on visit order. I'm restricting this to constants as for non-constants, we'd have to decide whether the simplicity was worth extra instructions. For constants, there are no extra instructions. We chose the canonical type as i64 arbitrarily. We might consider changing this to something else in the future if we have cause. Differential Revision: https://reviews.llvm.org/D115387
456 lines
16 KiB
LLVM
456 lines
16 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -instcombine -S -data-layout="e-n64" | FileCheck %s --check-prefixes=ANY,LE
|
|
; RUN: opt < %s -instcombine -S -data-layout="E-n64" | FileCheck %s --check-prefixes=ANY,BE
|
|
|
|
define i32 @extractelement_out_of_range(<2 x i32> %x) {
|
|
; ANY-LABEL: @extractelement_out_of_range(
|
|
; ANY-NEXT: ret i32 poison
|
|
;
|
|
%E1 = extractelement <2 x i32> %x, i8 16
|
|
ret i32 %E1
|
|
}
|
|
|
|
define i32 @extractelement_type_out_of_range(<2 x i32> %x) {
|
|
; ANY-LABEL: @extractelement_type_out_of_range(
|
|
; ANY-NEXT: [[E1:%.*]] = extractelement <2 x i32> [[X:%.*]], i64 0
|
|
; ANY-NEXT: ret i32 [[E1]]
|
|
;
|
|
%E1 = extractelement <2 x i32> %x, i128 0
|
|
ret i32 %E1
|
|
}
|
|
|
|
define i32 @bitcasted_inselt_equal_num_elts(float %f) {
|
|
; ANY-LABEL: @bitcasted_inselt_equal_num_elts(
|
|
; ANY-NEXT: [[R:%.*]] = bitcast float [[F:%.*]] to i32
|
|
; ANY-NEXT: ret i32 [[R]]
|
|
;
|
|
%vf = insertelement <4 x float> undef, float %f, i32 0
|
|
%vi = bitcast <4 x float> %vf to <4 x i32>
|
|
%r = extractelement <4 x i32> %vi, i32 0
|
|
ret i32 %r
|
|
}
|
|
|
|
define i64 @test2(i64 %in) {
|
|
; ANY-LABEL: @test2(
|
|
; ANY-NEXT: ret i64 [[IN:%.*]]
|
|
;
|
|
%vec = insertelement <8 x i64> undef, i64 %in, i32 0
|
|
%splat = shufflevector <8 x i64> %vec, <8 x i64> undef, <8 x i32> zeroinitializer
|
|
%add = add <8 x i64> %splat, <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
|
|
%r = extractelement <8 x i64> %add, i32 0
|
|
ret i64 %r
|
|
}
|
|
|
|
define i32 @bitcasted_inselt_wide_source_zero_elt(i64 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_zero_elt(
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[X:%.*]] to i32
|
|
; LE-NEXT: ret i32 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_zero_elt(
|
|
; BE-NEXT: [[TMP1:%.*]] = lshr i64 [[X:%.*]], 32
|
|
; BE-NEXT: [[R:%.*]] = trunc i64 [[TMP1]] to i32
|
|
; BE-NEXT: ret i32 [[R]]
|
|
;
|
|
%i = insertelement <2 x i64> zeroinitializer, i64 %x, i32 0
|
|
%b = bitcast <2 x i64> %i to <4 x i32>
|
|
%r = extractelement <4 x i32> %b, i32 0
|
|
ret i32 %r
|
|
}
|
|
|
|
define i16 @bitcasted_inselt_wide_source_modulo_elt(i64 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_modulo_elt(
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[X:%.*]] to i16
|
|
; LE-NEXT: ret i16 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_modulo_elt(
|
|
; BE-NEXT: [[TMP1:%.*]] = lshr i64 [[X:%.*]], 48
|
|
; BE-NEXT: [[R:%.*]] = trunc i64 [[TMP1]] to i16
|
|
; BE-NEXT: ret i16 [[R]]
|
|
;
|
|
%i = insertelement <2 x i64> undef, i64 %x, i32 1
|
|
%b = bitcast <2 x i64> %i to <8 x i16>
|
|
%r = extractelement <8 x i16> %b, i32 4
|
|
ret i16 %r
|
|
}
|
|
|
|
define i32 @bitcasted_inselt_wide_source_not_modulo_elt(i64 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt(
|
|
; LE-NEXT: [[TMP1:%.*]] = lshr i64 [[X:%.*]], 32
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[TMP1]] to i32
|
|
; LE-NEXT: ret i32 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt(
|
|
; BE-NEXT: [[R:%.*]] = trunc i64 [[X:%.*]] to i32
|
|
; BE-NEXT: ret i32 [[R]]
|
|
;
|
|
%i = insertelement <2 x i64> undef, i64 %x, i32 0
|
|
%b = bitcast <2 x i64> %i to <4 x i32>
|
|
%r = extractelement <4 x i32> %b, i32 1
|
|
ret i32 %r
|
|
}
|
|
|
|
define i8 @bitcasted_inselt_wide_source_not_modulo_elt_not_half(i32 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt_not_half(
|
|
; LE-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 16
|
|
; LE-NEXT: [[R:%.*]] = trunc i32 [[TMP1]] to i8
|
|
; LE-NEXT: ret i8 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt_not_half(
|
|
; BE-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 8
|
|
; BE-NEXT: [[R:%.*]] = trunc i32 [[TMP1]] to i8
|
|
; BE-NEXT: ret i8 [[R]]
|
|
;
|
|
%i = insertelement <2 x i32> undef, i32 %x, i32 0
|
|
%b = bitcast <2 x i32> %i to <8 x i8>
|
|
%r = extractelement <8 x i8> %b, i32 2
|
|
ret i8 %r
|
|
}
|
|
|
|
define i3 @bitcasted_inselt_wide_source_not_modulo_elt_not_half_weird_types(i15 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt_not_half_weird_types(
|
|
; LE-NEXT: [[TMP1:%.*]] = lshr i15 [[X:%.*]], 3
|
|
; LE-NEXT: [[R:%.*]] = trunc i15 [[TMP1]] to i3
|
|
; LE-NEXT: ret i3 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_not_modulo_elt_not_half_weird_types(
|
|
; BE-NEXT: [[TMP1:%.*]] = lshr i15 [[X:%.*]], 9
|
|
; BE-NEXT: [[R:%.*]] = trunc i15 [[TMP1]] to i3
|
|
; BE-NEXT: ret i3 [[R]]
|
|
;
|
|
%i = insertelement <3 x i15> undef, i15 %x, i32 0
|
|
%b = bitcast <3 x i15> %i to <15 x i3>
|
|
%r = extractelement <15 x i3> %b, i32 1
|
|
ret i3 %r
|
|
}
|
|
|
|
; Negative test for the above fold, but we can remove the insert here.
|
|
|
|
define i8 @bitcasted_inselt_wide_source_wrong_insert(<2 x i32> %v, i32 %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_wide_source_wrong_insert(
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x i32> [[V:%.*]] to <8 x i8>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <8 x i8> [[B]], i64 2
|
|
; ANY-NEXT: ret i8 [[R]]
|
|
;
|
|
%i = insertelement <2 x i32> %v, i32 %x, i32 1
|
|
%b = bitcast <2 x i32> %i to <8 x i8>
|
|
%r = extractelement <8 x i8> %b, i32 2
|
|
ret i8 %r
|
|
}
|
|
|
|
; Partial negative test for the above fold, extra uses are not allowed if shift is needed.
|
|
|
|
declare void @use(<8 x i8>)
|
|
|
|
define i8 @bitcasted_inselt_wide_source_uses(i32 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_wide_source_uses(
|
|
; LE-NEXT: [[I:%.*]] = insertelement <2 x i32> undef, i32 [[X:%.*]], i64 0
|
|
; LE-NEXT: [[B:%.*]] = bitcast <2 x i32> [[I]] to <8 x i8>
|
|
; LE-NEXT: call void @use(<8 x i8> [[B]])
|
|
; LE-NEXT: [[R:%.*]] = extractelement <8 x i8> [[B]], i64 3
|
|
; LE-NEXT: ret i8 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_wide_source_uses(
|
|
; BE-NEXT: [[I:%.*]] = insertelement <2 x i32> undef, i32 [[X:%.*]], i64 0
|
|
; BE-NEXT: [[B:%.*]] = bitcast <2 x i32> [[I]] to <8 x i8>
|
|
; BE-NEXT: call void @use(<8 x i8> [[B]])
|
|
; BE-NEXT: [[R:%.*]] = trunc i32 [[X]] to i8
|
|
; BE-NEXT: ret i8 [[R]]
|
|
;
|
|
%i = insertelement <2 x i32> undef, i32 %x, i32 0
|
|
%b = bitcast <2 x i32> %i to <8 x i8>
|
|
call void @use(<8 x i8> %b)
|
|
%r = extractelement <8 x i8> %b, i32 3
|
|
ret i8 %r
|
|
}
|
|
|
|
define float @bitcasted_inselt_to_FP(i64 %x) {
|
|
; LE-LABEL: @bitcasted_inselt_to_FP(
|
|
; LE-NEXT: [[TMP1:%.*]] = lshr i64 [[X:%.*]], 32
|
|
; LE-NEXT: [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32
|
|
; LE-NEXT: [[R:%.*]] = bitcast i32 [[TMP2]] to float
|
|
; LE-NEXT: ret float [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_to_FP(
|
|
; BE-NEXT: [[TMP1:%.*]] = trunc i64 [[X:%.*]] to i32
|
|
; BE-NEXT: [[R:%.*]] = bitcast i32 [[TMP1]] to float
|
|
; BE-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x i64> undef, i64 %x, i32 0
|
|
%b = bitcast <2 x i64> %i to <4 x float>
|
|
%r = extractelement <4 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
declare void @use_v2i128(<2 x i128>)
|
|
declare void @use_v8f32(<8 x float>)
|
|
|
|
define float @bitcasted_inselt_to_FP_uses(i128 %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_to_FP_uses(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x i128> undef, i128 [[X:%.*]], i64 0
|
|
; ANY-NEXT: call void @use_v2i128(<2 x i128> [[I]])
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x i128> [[I]] to <8 x float>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <8 x float> [[B]], i64 1
|
|
; ANY-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x i128> undef, i128 %x, i32 0
|
|
call void @use_v2i128(<2 x i128> %i)
|
|
%b = bitcast <2 x i128> %i to <8 x float>
|
|
%r = extractelement <8 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
define float @bitcasted_inselt_to_FP_uses2(i128 %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_to_FP_uses2(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x i128> undef, i128 [[X:%.*]], i64 0
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x i128> [[I]] to <8 x float>
|
|
; ANY-NEXT: call void @use_v8f32(<8 x float> [[B]])
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <8 x float> [[B]], i64 1
|
|
; ANY-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x i128> undef, i128 %x, i32 0
|
|
%b = bitcast <2 x i128> %i to <8 x float>
|
|
call void @use_v8f32(<8 x float> %b)
|
|
%r = extractelement <8 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
define i32 @bitcasted_inselt_from_FP(double %x) {
|
|
; LE-LABEL: @bitcasted_inselt_from_FP(
|
|
; LE-NEXT: [[TMP1:%.*]] = bitcast double [[X:%.*]] to i64
|
|
; LE-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 32
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[TMP2]] to i32
|
|
; LE-NEXT: ret i32 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcasted_inselt_from_FP(
|
|
; BE-NEXT: [[TMP1:%.*]] = bitcast double [[X:%.*]] to i64
|
|
; BE-NEXT: [[R:%.*]] = trunc i64 [[TMP1]] to i32
|
|
; BE-NEXT: ret i32 [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
%b = bitcast <2 x double> %i to <4 x i32>
|
|
%r = extractelement <4 x i32> %b, i32 1
|
|
ret i32 %r
|
|
}
|
|
|
|
declare void @use_v2f64(<2 x double>)
|
|
declare void @use_v8i16(<8 x i16>)
|
|
|
|
define i16 @bitcasted_inselt_from_FP_uses(double %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_from_FP_uses(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x double> undef, double [[X:%.*]], i64 0
|
|
; ANY-NEXT: call void @use_v2f64(<2 x double> [[I]])
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x double> [[I]] to <8 x i16>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <8 x i16> [[B]], i64 1
|
|
; ANY-NEXT: ret i16 [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
call void @use_v2f64(<2 x double> %i)
|
|
%b = bitcast <2 x double> %i to <8 x i16>
|
|
%r = extractelement <8 x i16> %b, i32 1
|
|
ret i16 %r
|
|
}
|
|
|
|
define i16 @bitcasted_inselt_from_FP_uses2(double %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_from_FP_uses2(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x double> undef, double [[X:%.*]], i64 0
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x double> [[I]] to <8 x i16>
|
|
; ANY-NEXT: call void @use_v8i16(<8 x i16> [[B]])
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <8 x i16> [[B]], i64 1
|
|
; ANY-NEXT: ret i16 [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
%b = bitcast <2 x double> %i to <8 x i16>
|
|
call void @use_v8i16(<8 x i16> %b)
|
|
%r = extractelement <8 x i16> %b, i32 1
|
|
ret i16 %r
|
|
}
|
|
|
|
define float @bitcasted_inselt_to_and_from_FP(double %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_to_and_from_FP(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x double> undef, double [[X:%.*]], i64 0
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x double> [[I]] to <4 x float>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <4 x float> [[B]], i64 1
|
|
; ANY-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
%b = bitcast <2 x double> %i to <4 x float>
|
|
%r = extractelement <4 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
define float @bitcasted_inselt_to_and_from_FP_uses(double %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_to_and_from_FP_uses(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x double> undef, double [[X:%.*]], i64 0
|
|
; ANY-NEXT: call void @use_v2f64(<2 x double> [[I]])
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x double> [[I]] to <4 x float>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <4 x float> [[B]], i64 1
|
|
; ANY-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
call void @use_v2f64(<2 x double> %i)
|
|
%b = bitcast <2 x double> %i to <4 x float>
|
|
%r = extractelement <4 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
declare void @use_v4f32(<4 x float>)
|
|
|
|
define float @bitcasted_inselt_to_and_from_FP_uses2(double %x) {
|
|
; ANY-LABEL: @bitcasted_inselt_to_and_from_FP_uses2(
|
|
; ANY-NEXT: [[I:%.*]] = insertelement <2 x double> undef, double [[X:%.*]], i64 0
|
|
; ANY-NEXT: [[B:%.*]] = bitcast <2 x double> [[I]] to <4 x float>
|
|
; ANY-NEXT: call void @use_v4f32(<4 x float> [[B]])
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <4 x float> [[B]], i64 1
|
|
; ANY-NEXT: ret float [[R]]
|
|
;
|
|
%i = insertelement <2 x double> undef, double %x, i32 0
|
|
%b = bitcast <2 x double> %i to <4 x float>
|
|
call void @use_v4f32(<4 x float> %b)
|
|
%r = extractelement <4 x float> %b, i32 1
|
|
ret float %r
|
|
}
|
|
|
|
; This would crash/assert because the logic for collectShuffleElements()
|
|
; does not consider the possibility of invalid insert/extract operands.
|
|
|
|
define <4 x double> @invalid_extractelement(<2 x double> %a, <4 x double> %b, double* %p) {
|
|
; ANY-LABEL: @invalid_extractelement(
|
|
; ANY-NEXT: [[TMP1:%.*]] = shufflevector <2 x double> [[A:%.*]], <2 x double> poison, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
|
|
; ANY-NEXT: [[T4:%.*]] = shufflevector <4 x double> [[B:%.*]], <4 x double> [[TMP1]], <4 x i32> <i32 undef, i32 1, i32 4, i32 3>
|
|
; ANY-NEXT: [[E:%.*]] = extractelement <4 x double> [[B]], i64 1
|
|
; ANY-NEXT: store double [[E]], double* [[P:%.*]], align 8
|
|
; ANY-NEXT: ret <4 x double> [[T4]]
|
|
;
|
|
%t3 = extractelement <2 x double> %a, i32 0
|
|
%t4 = insertelement <4 x double> %b, double %t3, i32 2
|
|
%e = extractelement <4 x double> %t4, i32 1
|
|
store double %e, double* %p
|
|
%e1 = extractelement <2 x double> %a, i32 4 ; invalid index
|
|
%r = insertelement <4 x double> %t4, double %e1, i64 0
|
|
ret <4 x double> %r
|
|
}
|
|
|
|
; i32 is a desirable/supported type independent of data layout.
|
|
|
|
define i8 @bitcast_scalar_supported_type_index0(i32 %x) {
|
|
; LE-LABEL: @bitcast_scalar_supported_type_index0(
|
|
; LE-NEXT: [[R:%.*]] = trunc i32 [[X:%.*]] to i8
|
|
; LE-NEXT: ret i8 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcast_scalar_supported_type_index0(
|
|
; BE-NEXT: [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 24
|
|
; BE-NEXT: [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
|
|
; BE-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast i32 %x to <4 x i8>
|
|
%r = extractelement <4 x i8> %v, i8 0
|
|
ret i8 %r
|
|
}
|
|
|
|
define i8 @bitcast_scalar_supported_type_index2(i32 %x) {
|
|
; LE-LABEL: @bitcast_scalar_supported_type_index2(
|
|
; LE-NEXT: [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 16
|
|
; LE-NEXT: [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
|
|
; LE-NEXT: ret i8 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcast_scalar_supported_type_index2(
|
|
; BE-NEXT: [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 8
|
|
; BE-NEXT: [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
|
|
; BE-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast i32 %x to <4 x i8>
|
|
%r = extractelement <4 x i8> %v, i64 2
|
|
ret i8 %r
|
|
}
|
|
|
|
; i64 is legal based on data layout.
|
|
|
|
define i4 @bitcast_scalar_legal_type_index3(i64 %x) {
|
|
; LE-LABEL: @bitcast_scalar_legal_type_index3(
|
|
; LE-NEXT: [[EXTELT_OFFSET:%.*]] = lshr i64 [[X:%.*]], 12
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[EXTELT_OFFSET]] to i4
|
|
; LE-NEXT: ret i4 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcast_scalar_legal_type_index3(
|
|
; BE-NEXT: [[EXTELT_OFFSET:%.*]] = lshr i64 [[X:%.*]], 48
|
|
; BE-NEXT: [[R:%.*]] = trunc i64 [[EXTELT_OFFSET]] to i4
|
|
; BE-NEXT: ret i4 [[R]]
|
|
;
|
|
%v = bitcast i64 %x to <16 x i4>
|
|
%r = extractelement <16 x i4> %v, i64 3
|
|
ret i4 %r
|
|
}
|
|
|
|
; negative test - don't create a shift for an illegal type.
|
|
|
|
define i8 @bitcast_scalar_illegal_type_index1(i128 %x) {
|
|
; ANY-LABEL: @bitcast_scalar_illegal_type_index1(
|
|
; ANY-NEXT: [[V:%.*]] = bitcast i128 [[X:%.*]] to <16 x i8>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <16 x i8> [[V]], i64 1
|
|
; ANY-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast i128 %x to <16 x i8>
|
|
%r = extractelement <16 x i8> %v, i64 1
|
|
ret i8 %r
|
|
}
|
|
|
|
; negative test - can't use shift/trunc on FP
|
|
|
|
define i8 @bitcast_fp_index0(float %x) {
|
|
; ANY-LABEL: @bitcast_fp_index0(
|
|
; ANY-NEXT: [[V:%.*]] = bitcast float [[X:%.*]] to <4 x i8>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <4 x i8> [[V]], i64 0
|
|
; ANY-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast float %x to <4 x i8>
|
|
%r = extractelement <4 x i8> %v, i8 0
|
|
ret i8 %r
|
|
}
|
|
|
|
; negative test - can't have FP dest type without a cast
|
|
|
|
define half @bitcast_fpvec_index0(i32 %x) {
|
|
; ANY-LABEL: @bitcast_fpvec_index0(
|
|
; ANY-NEXT: [[V:%.*]] = bitcast i32 [[X:%.*]] to <2 x half>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <2 x half> [[V]], i64 0
|
|
; ANY-NEXT: ret half [[R]]
|
|
;
|
|
%v = bitcast i32 %x to <2 x half>
|
|
%r = extractelement <2 x half> %v, i8 0
|
|
ret half %r
|
|
}
|
|
|
|
; negative test - need constant index
|
|
|
|
define i8 @bitcast_scalar_index_variable(i32 %x, i64 %y) {
|
|
; ANY-LABEL: @bitcast_scalar_index_variable(
|
|
; ANY-NEXT: [[V:%.*]] = bitcast i32 [[X:%.*]] to <4 x i8>
|
|
; ANY-NEXT: [[R:%.*]] = extractelement <4 x i8> [[V]], i64 [[Y:%.*]]
|
|
; ANY-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast i32 %x to <4 x i8>
|
|
%r = extractelement <4 x i8> %v, i64 %y
|
|
ret i8 %r
|
|
}
|
|
|
|
; extra use is ok if we don't need a shift
|
|
|
|
define i8 @bitcast_scalar_index0_use(i64 %x) {
|
|
; LE-LABEL: @bitcast_scalar_index0_use(
|
|
; LE-NEXT: [[V:%.*]] = bitcast i64 [[X:%.*]] to <8 x i8>
|
|
; LE-NEXT: call void @use(<8 x i8> [[V]])
|
|
; LE-NEXT: [[R:%.*]] = trunc i64 [[X]] to i8
|
|
; LE-NEXT: ret i8 [[R]]
|
|
;
|
|
; BE-LABEL: @bitcast_scalar_index0_use(
|
|
; BE-NEXT: [[V:%.*]] = bitcast i64 [[X:%.*]] to <8 x i8>
|
|
; BE-NEXT: call void @use(<8 x i8> [[V]])
|
|
; BE-NEXT: [[R:%.*]] = extractelement <8 x i8> [[V]], i64 0
|
|
; BE-NEXT: ret i8 [[R]]
|
|
;
|
|
%v = bitcast i64 %x to <8 x i8>
|
|
call void @use(<8 x i8> %v)
|
|
%r = extractelement <8 x i8> %v, i64 0
|
|
ret i8 %r
|
|
}
|