llvm-project/llvm/test/Transforms/Reassociate/fast-AgressiveSubMove.ll

25 lines
591 B
LLVM

; RUN: opt < %s -reassociate -S | FileCheck %s
define float @test1(float %A) {
; CHECK-LABEL: test1
; CHECK-NEXT: %X = fadd float %A, 1.000000e+00
; CHECK-NEXT: %Y = fadd float %A, 1.000000e+00
; CHECK-NEXT: %r = fsub float %X, %Y
; CHECK-NEXT: ret float %r
%X = fadd float %A, 1.000000e+00
%Y = fadd float %A, 1.000000e+00
%r = fsub float %X, %Y
ret float %r
}
define float @test2(float %A) {
; CHECK-LABEL: test2
; CHECK-NEXT: ret float 0.000000e+00
%X = fadd fast float 1.000000e+00, %A
%Y = fadd fast float 1.000000e+00, %A
%r = fsub fast float %X, %Y
ret float %r
}