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159 lines
4.6 KiB
LLVM
159 lines
4.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Test some floating point casting cases
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i8 @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i8 -1
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;
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%x = fptoui float 2.550000e+02 to i8
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ret i8 %x
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}
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define i8 @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret i8 -1
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;
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%x = fptosi float -1.000000e+00 to i8
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ret i8 %x
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}
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define half @test3(float %a) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
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; CHECK-NEXT: [[C:%.*]] = call half @llvm.fabs.f16(half [[TMP1]])
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; CHECK-NEXT: ret half [[C]]
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;
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%b = call float @llvm.fabs.f32(float %a)
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%c = fptrunc float %b to half
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ret half %c
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}
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define half @fneg_fptrunc(float %a) {
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; CHECK-LABEL: @fneg_fptrunc(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
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; CHECK-NEXT: [[C:%.*]] = fsub half 0xH8000, [[TMP1]]
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; CHECK-NEXT: ret half [[C]]
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;
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%b = fsub float -0.0, %a
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%c = fptrunc float %b to half
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ret half %c
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}
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define half @unary_fneg_fptrunc(float %a) {
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; CHECK-LABEL: @unary_fneg_fptrunc(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
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; CHECK-NEXT: [[C:%.*]] = fneg half [[TMP1]]
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; CHECK-NEXT: ret half [[C]]
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;
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%b = fneg float %a
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%c = fptrunc float %b to half
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ret half %c
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}
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define <2 x half> @fneg_fptrunc_vec_undef(<2 x float> %a) {
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; CHECK-LABEL: @fneg_fptrunc_vec_undef(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc <2 x float> [[A:%.*]] to <2 x half>
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; CHECK-NEXT: [[C:%.*]] = fsub <2 x half> <half 0xH8000, half 0xH8000>, [[TMP1]]
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; CHECK-NEXT: ret <2 x half> [[C]]
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;
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%b = fsub <2 x float> <float -0.0, float undef>, %a
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%c = fptrunc <2 x float> %b to <2 x half>
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ret <2 x half> %c
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}
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define <2 x half> @unary_fneg_fptrunc_vec(<2 x float> %a) {
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; CHECK-LABEL: @unary_fneg_fptrunc_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc <2 x float> [[A:%.*]] to <2 x half>
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; CHECK-NEXT: [[C:%.*]] = fneg <2 x half> [[TMP1]]
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; CHECK-NEXT: ret <2 x half> [[C]]
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;
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%b = fneg <2 x float> %a
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%c = fptrunc <2 x float> %b to <2 x half>
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ret <2 x half> %c
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}
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define half @test4-fast(float %a) {
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; CHECK-LABEL: @test4-fast(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
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; CHECK-NEXT: [[C:%.*]] = fsub fast half 0xH8000, [[TMP1]]
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; CHECK-NEXT: ret half [[C]]
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;
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%b = fsub fast float -0.0, %a
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%c = fptrunc float %b to half
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ret half %c
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}
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define half @test4_unary_fneg-fast(float %a) {
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; CHECK-LABEL: @test4_unary_fneg-fast(
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; CHECK-NEXT: [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
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; CHECK-NEXT: [[C:%.*]] = fneg fast half [[TMP1]]
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; CHECK-NEXT: ret half [[C]]
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;
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%b = fneg fast float %a
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%c = fptrunc float %b to half
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ret half %c
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}
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define half @test5(float %a, float %b, float %c) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[D:%.*]] = fcmp ogt float [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[E:%.*]] = select i1 [[D]], float [[C:%.*]], float 1.000000e+00
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; CHECK-NEXT: [[F:%.*]] = fptrunc float [[E]] to half
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; CHECK-NEXT: ret half [[F]]
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;
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%d = fcmp ogt float %a, %b
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%e = select i1 %d, float %c, float 1.0
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%f = fptrunc float %e to half
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ret half %f
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}
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declare float @llvm.fabs.f32(float) nounwind readonly
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define <1 x float> @test6(<1 x double> %V) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[FREM:%.*]] = frem <1 x double> [[V:%.*]], [[V]]
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; CHECK-NEXT: [[TRUNC:%.*]] = fptrunc <1 x double> [[FREM]] to <1 x float>
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; CHECK-NEXT: ret <1 x float> [[TRUNC]]
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;
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%frem = frem <1 x double> %V, %V
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%trunc = fptrunc <1 x double> %frem to <1 x float>
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ret <1 x float> %trunc
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}
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define float @test7(double %V) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[FREM:%.*]] = frem double [[V:%.*]], 1.000000e+00
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; CHECK-NEXT: [[TRUNC:%.*]] = fptrunc double [[FREM]] to float
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; CHECK-NEXT: ret float [[TRUNC]]
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;
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%frem = frem double %V, 1.000000e+00
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%trunc = fptrunc double %frem to float
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ret float %trunc
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}
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define float @test8(float %V) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[FEXT:%.*]] = fpext float [[V:%.*]] to double
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; CHECK-NEXT: [[FREM:%.*]] = frem double [[FEXT]], 1.000000e-01
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; CHECK-NEXT: [[TRUNC:%.*]] = fptrunc double [[FREM]] to float
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; CHECK-NEXT: ret float [[TRUNC]]
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;
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%fext = fpext float %V to double
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%frem = frem double %fext, 1.000000e-01
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%trunc = fptrunc double %frem to float
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ret float %trunc
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}
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define half @test_fptrunc_fptrunc(double %V) {
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; CHECK-LABEL: @test_fptrunc_fptrunc(
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; CHECK-NEXT: [[T1:%.*]] = fptrunc double [[V:%.*]] to float
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; CHECK-NEXT: [[T2:%.*]] = fptrunc float [[T1]] to half
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; CHECK-NEXT: ret half [[T2]]
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;
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%t1 = fptrunc double %V to float
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%t2 = fptrunc float %t1 to half
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ret half %t2
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}
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