mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-08 03:29:41 +00:00
97a29a5fee
example to:
_test:
movl 4(%esp), %eax
cmpl $41, (%eax)
setg %al
movzbl %al, %eax
orl $4294967294, %eax
ret
instead of:
movl 4(%esp), %eax
cmpl $41, (%eax)
movl $4294967294, %ecx
movl $4294967295, %eax
cmova %ecx, %eax
ret
which is smaller in code size and faster. rdar://6668608
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66868 91177308-0d34-0410-b5e6-96231b3b80d8
15 lines
510 B
LLVM
15 lines
510 B
LLVM
; RUN: llvm-as < %s | llc | not grep cmov
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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"
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target triple = "i386-apple-darwin7"
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; Should compile to setcc | -2.
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; rdar://6668608
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define i32 @test(i32* nocapture %P) nounwind readonly {
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entry:
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%0 = load i32* %P, align 4 ; <i32> [#uses=1]
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%1 = icmp sgt i32 %0, 41 ; <i1> [#uses=1]
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%iftmp.0.0 = select i1 %1, i32 -1, i32 -2 ; <i32> [#uses=1]
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ret i32 %iftmp.0.0
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}
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