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https://github.com/c64scene-ar/llvm-6502.git
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14ac1dd2be
NO path to the destination containing side effects, not that SOME path contains no side effects. In practice, this only manifests with CombinerAA enabled, because otherwise the chain has little to no branching, so "any" is effectively equivalent to "all". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114268 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; RUN: llc < %s -combiner-alias-analysis -march=x86-64 | FileCheck %s
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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-n8:16:32:64"
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target triple = "x86_64-apple-darwin10.4"
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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define fastcc i32 @cli_magic_scandesc(i8* %in) nounwind ssp {
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entry:
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%a = alloca [64 x i8]
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%b = getelementptr inbounds [64 x i8]* %a, i64 0, i32 0
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%c = getelementptr inbounds [64 x i8]* %a, i64 0, i32 30
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%d = load i8* %b, align 8
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%e = load i8* %c, align 8
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%f = bitcast [64 x i8]* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %f, i8* %in, i64 64, i32 8, i1 false) nounwind
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store i8 %d, i8* %b, align 8
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store i8 %e, i8* %c, align 8
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ret i32 0
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}
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; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip), %rax
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; CHECK: movb (%rsp), %dl
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; CHECK-NEXT: movb 30(%rsp), %sil
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; CHECK: movb %dl, (%rsp)
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; CHECK-NEXT: movb %sil, 30(%rsp)
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; CHECK: callq ___stack_chk_fail
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