27 lines
797 B
LLVM
27 lines
797 B
LLVM
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; RUN: llc < %s | FileCheck %s
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; Test to make sure that if math that can roll over has been used we don't
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; use the potential overflow as the basis for an address calculation later by
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; sinking it into a different basic block.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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; Function Attrs: nounwind ssp uwtable
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define void @test_sink(i8* %arg1, i32 %arg2, i8 %arg3) #0 {
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%tmp1 = add i32 -2147483648, %arg2
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%tmp2 = add i32 -2147483648, %tmp1
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%tmp3 = getelementptr i8, i8* %arg1, i32 %arg2
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br label %bb1
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bb1:
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%tmp4 = getelementptr i8, i8* %arg1, i32 %tmp2
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store i8 %arg3, i8* %tmp4
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ret void;
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}
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; CHECK-LABEL: test_sink:
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; CHECK: movslq %esi, [[TEMP:%[a-z0-9]+]]
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; CHECK: movb %dl, (%rdi,[[TEMP]])
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; CHECK: retq
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