llvm-6502/test/Transforms/ConstProp/calls.ll
Chandler Carruth 15ed90c859 Teach constant folding to perform conversions from constant floating
point values to their integer representation through the SSE intrinsic
calls. This is the last part of a README.txt entry for which I have real
world examples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-11 01:07:24 +00:00

57 lines
2.2 KiB
LLVM

; RUN: opt < %s -constprop -S | FileCheck %s
declare double @cos(double)
declare double @sin(double)
declare double @tan(double)
declare double @sqrt(double)
define double @T() {
; CHECK: @T
; CHECK-NOT: call
; CHECK: ret
%A = call double @cos(double 0.000000e+00)
%B = call double @sin(double 0.000000e+00)
%a = fadd double %A, %B
%C = call double @tan(double 0.000000e+00)
%b = fadd double %a, %C
%D = call double @sqrt(double 4.000000e+00)
%c = fadd double %b, %D
ret double %c
}
define i1 @test_sse_cvt() nounwind readnone {
; CHECK: @test_sse_cvt
; CHECK-NOT: call
; CHECK: ret i1 true
entry:
%i0 = tail call i32 @llvm.x86.sse.cvtss2si(<4 x float> <float 1.75, float undef, float undef, float undef>) nounwind
%i1 = tail call i32 @llvm.x86.sse.cvttss2si(<4 x float> <float 1.75, float undef, float undef, float undef>) nounwind
%i2 = tail call i64 @llvm.x86.sse.cvtss2si64(<4 x float> <float 1.75, float undef, float undef, float undef>) nounwind
%i3 = tail call i64 @llvm.x86.sse.cvttss2si64(<4 x float> <float 1.75, float undef, float undef, float undef>) nounwind
%i4 = call i32 @llvm.x86.sse2.cvtsd2si(<2 x double> <double 1.75, double undef>) nounwind
%i5 = call i32 @llvm.x86.sse2.cvttsd2si(<2 x double> <double 1.75, double undef>) nounwind
%i6 = call i64 @llvm.x86.sse2.cvtsd2si64(<2 x double> <double 1.75, double undef>) nounwind
%i7 = call i64 @llvm.x86.sse2.cvttsd2si64(<2 x double> <double 1.75, double undef>) nounwind
%sum11 = add i32 %i0, %i1
%sum12 = add i32 %i4, %i5
%sum1 = add i32 %sum11, %sum12
%sum21 = add i64 %i2, %i3
%sum22 = add i64 %i6, %i7
%sum2 = add i64 %sum21, %sum22
%sum1.sext = sext i32 %sum1 to i64
%b = icmp eq i64 %sum1.sext, %sum2
ret i1 %b
}
declare i32 @llvm.x86.sse.cvtss2si(<4 x float>) nounwind readnone
declare i32 @llvm.x86.sse.cvttss2si(<4 x float>) nounwind readnone
declare i64 @llvm.x86.sse.cvtss2si64(<4 x float>) nounwind readnone
declare i64 @llvm.x86.sse.cvttss2si64(<4 x float>) nounwind readnone
declare i32 @llvm.x86.sse2.cvtsd2si(<2 x double>) nounwind readnone
declare i32 @llvm.x86.sse2.cvttsd2si(<2 x double>) nounwind readnone
declare i64 @llvm.x86.sse2.cvtsd2si64(<2 x double>) nounwind readnone
declare i64 @llvm.x86.sse2.cvttsd2si64(<2 x double>) nounwind readnone