mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-04 22:29:22 +00:00
b09916bdfb
stack slot and store if the SINT_TO_FP is actually legal. This allows
us to compile:
double a(double b) {return (unsigned)b;}
to:
_a:
cvttsd2siq %xmm0, %rax
movl %eax, %eax
cvtsi2sdq %rax, %xmm0
ret
instead of:
_a:
subq $8, %rsp
cvttsd2siq %xmm0, %rax
movl %eax, %eax
cvtsi2sdq %rax, %xmm0
addq $8, %rsp
ret
crazy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47660 91177308-0d34-0410-b5e6-96231b3b80d8
11 lines
409 B
LLVM
11 lines
409 B
LLVM
; RUN: llvm-as < %s | not grep rsp
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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target triple = "x86_64-apple-darwin8"
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define double @a(double %b) nounwind {
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entry:
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%tmp12 = fptoui double %b to i32 ; <i32> [#uses=1]
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%tmp123 = uitofp i32 %tmp12 to double ; <double> [#uses=1]
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ret double %tmp123
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}
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