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llvm-6502/test/Transforms/InstCombine/2009-01-19-fmod-constant-float-specials.ll
Dale Johannesen ed6af24e14 Make special cases (0 inf nan) work for frem. 
Besides APFloat, this involved removing code
from two places that thought they knew the
result of frem(0., x) but were wrong.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62645 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-21 00:35:19 +00:00

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; RUN: llvm-as < %s | opt -simplifycfg -instcombine | llvm-dis | grep 0x7FF8000000000000 | count 7
; RUN: llvm-as < %s | opt -simplifycfg -instcombine | llvm-dis | grep 0x7FF80000FFFFFFFF | count 5
; RUN: llvm-as < %s | opt -simplifycfg -instcombine | llvm-dis | grep {0\\.0} | count 3
; RUN: llvm-as < %s | opt -simplifycfg -instcombine | llvm-dis | grep {3\\.5} | count 1
; ModuleID = 'apf.c'
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9.6"
@"\01LC" = internal constant [4 x i8] c"%f\0A\00" ; <[4 x i8]*> [#uses=1]
define void @foo1() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF0000000000000, float* %x, align 4
store float 0x7FF8000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
declare i32 @printf(i8*, ...) nounwind
define void @foo2() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF0000000000000, float* %x, align 4
store float 0.000000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo3() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF0000000000000, float* %x, align 4
store float 3.500000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo4() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF0000000000000, float* %x, align 4
store float 0x7FF0000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo5() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF8000000000000, float* %x, align 4
store float 0x7FF0000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo6() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF8000000000000, float* %x, align 4
store float 0.000000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo7() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF8000000000000, float* %x, align 4
store float 3.500000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo8() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0x7FF8000000000000, float* %x, align 4
store float 0x7FF8000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo9() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0.000000e+00, float* %x, align 4
store float 0x7FF8000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo10() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0.000000e+00, float* %x, align 4
store float 0x7FF0000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo11() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0.000000e+00, float* %x, align 4
store float 0.000000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo12() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 0.000000e+00, float* %x, align 4
store float 3.500000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo13() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 3.500000e+00, float* %x, align 4
store float 0x7FF8000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo14() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 3.500000e+00, float* %x, align 4
store float 0x7FF0000000000000, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo15() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 3.500000e+00, float* %x, align 4
store float 0.000000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
define void @foo16() nounwind {
entry:
%y = alloca float ; <float*> [#uses=2]
%x = alloca float ; <float*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store float 3.500000e+00, float* %x, align 4
store float 3.500000e+00, float* %y, align 4
%0 = load float* %y, align 4 ; <float> [#uses=1]
%1 = fpext float %0 to double ; <double> [#uses=1]
%2 = load float* %x, align 4 ; <float> [#uses=1]
%3 = fpext float %2 to double ; <double> [#uses=1]
%4 = frem double %3, %1 ; <double> [#uses=1]
%5 = call i32 (i8*, ...)* @printf(i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i32 0), double %4) nounwind ; <i32> [#uses=0]
br label %return
return: ; preds = %entry
ret void
}
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