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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -mtriple=amdgcn-amd-amdhsa -passes=instcombine -S | FileCheck %s
; Simplify to +0.0 + z.
define float @test_zero(float %x, float %z) {
; CHECK-LABEL: @test_zero(
; CHECK-NEXT: [[CALL:%.*]] = fadd float [[Z:%.*]], 0.000000e+00
; CHECK-NEXT: ret float [[CALL]]
;
%call = call float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z)
ret float %call
}
; Simplify to +0.0 + z, preserving fmf.
define float @test_zero_fmf(float %x, float %z) {
; CHECK-LABEL: @test_zero_fmf(
; CHECK-NEXT: [[CALL:%.*]] = fadd contract float [[Z:%.*]], 0.000000e+00
; CHECK-NEXT: ret float [[CALL]]
;
%call = call contract float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z)
ret float %call
}
; Simplify to z.
define float @test_zero_nsz(float %x, float %z) {
; CHECK-LABEL: @test_zero_nsz(
; CHECK-NEXT: ret float [[Z:%.*]]
;
%call = call nsz float @llvm.amdgcn.fma.legacy(float %x, float 0.0, float %z)
ret float %call
}
; Simplify to +0.0 + z.
define float @test_negzero(float %y, float %z) {
; CHECK-LABEL: @test_negzero(
; CHECK-NEXT: [[CALL:%.*]] = fadd float [[Z:%.*]], 0.000000e+00
; CHECK-NEXT: ret float [[CALL]]
;
%call = call float @llvm.amdgcn.fma.legacy(float -0.0, float %y, float %z)
ret float %call
}
; Simplify to z.
define float @test_negzero_nsz(float %y, float %z) {
; CHECK-LABEL: @test_negzero_nsz(
; CHECK-NEXT: ret float [[Z:%.*]]
;
%call = call nsz float @llvm.amdgcn.fma.legacy(float -0.0, float %y, float %z)
ret float %call
}
; Combine to fma because the constant is finite and non-zero.
define float @test_const(float %x, float %z) {
; CHECK-LABEL: @test_const(
; CHECK-NEXT: [[CALL:%.*]] = call float @llvm.fma.f32(float [[X:%.*]], float 9.950000e+01, float [[Z:%.*]])
; CHECK-NEXT: ret float [[CALL]]
;
%call = call float @llvm.amdgcn.fma.legacy(float %x, float 99.5, float %z)
ret float %call
}
; Combine to fma because the constant is finite and non-zero, preserving fmf.
define float @test_const_fmf(float %x, float %z) {
; CHECK-LABEL: @test_const_fmf(
; CHECK-NEXT: [[CALL:%.*]] = call contract float @llvm.fma.f32(float [[X:%.*]], float 9.950000e+01, float [[Z:%.*]])
; CHECK-NEXT: ret float [[CALL]]
;
%call = call contract float @llvm.amdgcn.fma.legacy(float %x, float 99.5, float %z)
ret float %call
}
; Combine to fma because neither argument can be infinity or NaN.
define float @test_finite(i32 %x, i32 %y, float %z) {
; CHECK-LABEL: @test_finite(
; CHECK-NEXT: [[XF:%.*]] = sitofp i32 [[X:%.*]] to float
; CHECK-NEXT: [[YF:%.*]] = sitofp i32 [[Y:%.*]] to float
; CHECK-NEXT: [[CALL:%.*]] = call float @llvm.fma.f32(float [[XF]], float [[YF]], float [[Z:%.*]])
; CHECK-NEXT: ret float [[CALL]]
;
%xf = sitofp i32 %x to float
%yf = sitofp i32 %y to float
%call = call float @llvm.amdgcn.fma.legacy(float %xf, float %yf, float %z)
ret float %call
}
; Combine to fma because neither argument can be infinity or NaN based on assumptions
define float @test_finite_assumed(float %x, float %y, float %z) {
; CHECK-LABEL: @test_finite_assumed(
; CHECK-NEXT: [[FABS_X:%.*]] = call float @llvm.fabs.f32(float [[X:%.*]])
; CHECK-NEXT: [[IS_FINITE_X:%.*]] = fcmp one float [[FABS_X]], 0x7FF0000000000000
; CHECK-NEXT: [[FABS_Y:%.*]] = call float @llvm.fabs.f32(float [[Y:%.*]])
; CHECK-NEXT: [[IS_FINITE_Y:%.*]] = fcmp one float [[FABS_Y]], 0x7FF0000000000000
; CHECK-NEXT: call void @llvm.assume(i1 [[IS_FINITE_X]])
; CHECK-NEXT: call void @llvm.assume(i1 [[IS_FINITE_Y]])
; CHECK-NEXT: [[CALL:%.*]] = call float @llvm.fma.f32(float [[X]], float [[Y]], float [[Z:%.*]])
; CHECK-NEXT: ret float [[CALL]]
;
%fabs.x = call float @llvm.fabs.f32(float %x)
%is.finite.x = fcmp one float %fabs.x, 0x7FF0000000000000
%fabs.y = call float @llvm.fabs.f32(float %y)
%is.finite.y = fcmp one float %fabs.y, 0x7FF0000000000000
call void @llvm.assume(i1 %is.finite.x)
call void @llvm.assume(i1 %is.finite.y)
%call = call float @llvm.amdgcn.fma.legacy(float %x, float %y, float %z)
ret float %call
}
declare float @llvm.amdgcn.fma.legacy(float, float, float)
declare float @llvm.fabs.f32(float)
declare void @llvm.assume(i1 noundef)
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