llvm-6502/test/CodeGen/X86/uint_to_fp.ll
Evan Cheng a06ec9efe1 Now not UINT_TO_FP is legal (it's marked custom), dag combiner won't
optimize it to a SINT_TO_FP when the sign bit is known zero. X86 isel should perform the optimization itself.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62504 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-19 08:08:22 +00:00

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LLVM

; RUN: llvm-as < %s | llc -march=x86 -mcpu=yonah | not grep {sub.*esp}
; RUN: llvm-as < %s | llc -march=x86 -mcpu=yonah | grep cvtsi2ss
; rdar://6034396
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-darwin8"
define void @test(i32 %x, float* %y) nounwind {
entry:
lshr i32 %x, 23 ; <i32>:0 [#uses=1]
uitofp i32 %0 to float ; <float>:1 [#uses=1]
store float %1, float* %y
ret void
}