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pattern match min/max nodes

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llvm-svn: 30718
This commit is contained in:
Chris Lattner 2006-10-04 06:56:02 +00:00
parent 9d335a2a75
commit 097967c438
1 changed files with 37 additions and 0 deletions
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37
test/Regression/CodeGen/X86/scalar_sse_minmax.ll Normal file
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; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1,+sse2 | grep mins | wc -l | grep 2 &&
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1,+sse2 | grep maxs | wc -l | grep 2
declare bool %llvm.isunordered.f64( double %x, double %y )
declare bool %llvm.isunordered.f32( float %x, float %y )
implementation
float %min1(float %x, float %y) {
%tmp = setlt float %x, %y ; <bool> [#uses=1]
%retval = select bool %tmp, float %x, float %y ; <float> [#uses=1]
ret float %retval
}
double %min2(double %x, double %y) {
%tmp = setlt double %x, %y
%retval = select bool %tmp, double %x, double %y
ret double %retval
}
float %max1(float %x, float %y) {
%tmp = setge float %x, %y ; <bool> [#uses=1]
%tmp2 = tail call bool %llvm.isunordered.f32( float %x, float %y )
%tmp3 = or bool %tmp2, %tmp ; <bool> [#uses=1]
%retval = select bool %tmp3, float %x, float %y
ret float %retval
}
double %max2(double %x, double %y) {
%tmp = setge double %x, %y ; <bool> [#uses=1]
%tmp2 = tail call bool %llvm.isunordered.f64( double %x, double %y )
%tmp3 = or bool %tmp2, %tmp ; <bool> [#uses=1]
%retval = select bool %tmp3, double %x, double %y
ret double %retval
}