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https://github.com/c64scene-ar/llvm-6502.git
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36a0947820
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
32 lines
1.1 KiB
LLVM
32 lines
1.1 KiB
LLVM
; RUN: llc < %s -march=x86 -regalloc=local | grep {subl %eax, %edx}
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; Local regalloc shouldn't assume that both the uses of the
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; sub instruction are kills, because one of them is tied
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; to an output. Previously, it was allocating both inputs
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; in the same register.
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define i32 @func_3() nounwind {
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entry:
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%retval = alloca i32 ; <i32*> [#uses=2]
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%g_323 = alloca i8 ; <i8*> [#uses=2]
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%p_5 = alloca i64, align 8 ; <i64*> [#uses=2]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i64 0, i64* %p_5, align 8
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store i8 1, i8* %g_323, align 1
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%1 = load i8* %g_323, align 1 ; <i8> [#uses=1]
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%2 = sext i8 %1 to i64 ; <i64> [#uses=1]
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%3 = load i64* %p_5, align 8 ; <i64> [#uses=1]
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%4 = sub i64 %3, %2 ; <i64> [#uses=1]
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%5 = icmp sge i64 %4, 0 ; <i1> [#uses=1]
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%6 = zext i1 %5 to i32 ; <i32> [#uses=1]
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store i32 %6, i32* %0, align 4
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%7 = load i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %7, i32* %retval, align 4
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br label %return
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return: ; preds = %entry
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%retval1 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval1
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}
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