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Calls to fmod, it turns out, are constant-folded by

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invoking the host fmod, not by lowering to frem and
constant-folding that.  Fix this so it tests what I
want to test.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62622 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2009-01-20 21:58:13 +00:00
parent 1d5ee5c3b8
commit 67e1e7c3d8
1 changed files with 4 additions and 6 deletions
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10
test/Transforms/InstCombine/2009-01-19-fmod-constant-float.ll
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@@ -11,7 +11,7 @@ entry:
%retval = alloca float ; <float*> [#uses=2] %retval = alloca float ; <float*> [#uses=2]
%0 = alloca float ; <float*> [#uses=2] %0 = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%1 = call double @fmod(double 1.000000e-01, double 1.000000e+00) nounwind readonly ; <double> [#uses=1] %1 = frem double 1.000000e-01, 1.000000e+00 ; <double> [#uses=1]
%2 = fptrunc double %1 to float ; <float> [#uses=1] %2 = fptrunc double %1 to float ; <float> [#uses=1]
store float %2, float* %0, align 4 store float %2, float* %0, align 4
%3 = load float* %0, align 4 ; <float> [#uses=1] %3 = load float* %0, align 4 ; <float> [#uses=1]
@@ -23,14 +23,12 @@ return: ; preds = %entry
ret float %retval1 ret float %retval1
} }
declare double @fmod(double, double) nounwind readonly
define float @test2() nounwind { define float @test2() nounwind {
entry: entry:
%retval = alloca float ; <float*> [#uses=2] %retval = alloca float ; <float*> [#uses=2]
%0 = alloca float ; <float*> [#uses=2] %0 = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%1 = call double @fmod(double -1.000000e-01, double 1.000000e+00) nounwind readonly ; <double> [#uses=1] %1 = frem double -1.000000e-01, 1.000000e+00 ; <double> [#uses=1]
%2 = fptrunc double %1 to float ; <float> [#uses=1] %2 = fptrunc double %1 to float ; <float> [#uses=1]
store float %2, float* %0, align 4 store float %2, float* %0, align 4
%3 = load float* %0, align 4 ; <float> [#uses=1] %3 = load float* %0, align 4 ; <float> [#uses=1]
@@ -47,7 +45,7 @@ entry:
%retval = alloca float ; <float*> [#uses=2] %retval = alloca float ; <float*> [#uses=2]
%0 = alloca float ; <float*> [#uses=2] %0 = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%1 = call double @fmod(double 1.000000e-01, double -1.000000e+00) nounwind readonly ; <double> [#uses=1] %1 = frem double 1.000000e-01, -1.000000e+00 ; <double> [#uses=1]
%2 = fptrunc double %1 to float ; <float> [#uses=1] %2 = fptrunc double %1 to float ; <float> [#uses=1]
store float %2, float* %0, align 4 store float %2, float* %0, align 4
%3 = load float* %0, align 4 ; <float> [#uses=1] %3 = load float* %0, align 4 ; <float> [#uses=1]
@@ -64,7 +62,7 @@ entry:
%retval = alloca float ; <float*> [#uses=2] %retval = alloca float ; <float*> [#uses=2]
%0 = alloca float ; <float*> [#uses=2] %0 = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%1 = call double @fmod(double -1.000000e-01, double -1.000000e+00) nounwind readonly ; <double> [#uses=1] %1 = frem double -1.000000e-01, -1.000000e+00 ; <double> [#uses=1]
%2 = fptrunc double %1 to float ; <float> [#uses=1] %2 = fptrunc double %1 to float ; <float> [#uses=1]
store float %2, float* %0, align 4 store float %2, float* %0, align 4
%3 = load float* %0, align 4 ; <float> [#uses=1] %3 = load float* %0, align 4 ; <float> [#uses=1]