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; This is a basic sanity check for constant propagation. The fneg instruction
; should be eliminated.
; RUN: opt < %s -sccp -S | FileCheck %s
define double @test(i1 %B) {
br i1 %B, label %BB1, label %BB2
BB1:
%Val = fneg double 42.0
br label %BB3
BB2:
br label %BB3
BB3:
%Ret = phi double [%Val, %BB1], [1.0, %BB2]
ret double %Ret
; CHECK-LABEL: @test(
; CHECK: [[PHI:%.*]] = phi double [ -4.200000e+01, %BB1 ], [ 1.000000e+00, %BB2 ]
}
define double @test1(i1 %B) {
br i1 %B, label %BB1, label %BB2
BB1:
%Div = fdiv double 1.0, 1.0
%Val = fneg double %Div
br label %BB3
BB2:
br label %BB3
BB3:
%Ret = phi double [%Val, %BB1], [1.0, %BB2]
ret double %Ret
; CHECK-LABEL: @test1(
; CHECK: [[PHI:%.*]] = phi double [ -1.000000e+00, %BB1 ], [ 1.000000e+00, %BB2 ]
}
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