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30 lines
1.3 KiB
LLVM
30 lines
1.3 KiB
LLVM
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; RUN: llc -regalloc=fast < %s | FileCheck %s
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; PR7382
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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-unknown-linux-gnu"
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@.str = private constant [23 x i8] c"This should be -1: %d\0A\00" ; <[23 x i8]*> [#uses=1]
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define i32 @main() {
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entry:
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%retval = alloca i32, align 4 ; <i32*> [#uses=3]
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%v = alloca i32, align 4 ; <i32*> [#uses=3]
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store i32 0, i32* %retval
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%zero = load i32* %retval
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; The earlyclobber register EC0 should not be spilled before the inline asm.
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; Yes, check-not can refer to FileCheck variables defined in the future.
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; CHECK-NOT: [[EC0]]{{.*}}(%rsp)
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; CHECK: bsr {{[^,]*}}, [[EC0:%...]]
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%0 = call i32 asm "bsr $1, $0\0A\09cmovz $2, $0", "=&r,ro,r,~{cc},~{dirflag},~{fpsr},~{flags}"(i32 %zero, i32 -1) nounwind, !srcloc !0 ; <i32> [#uses=1]
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store i32 %0, i32* %v
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%tmp = load i32* %v ; <i32> [#uses=1]
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%call1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([23 x i8]* @.str, i32 0, i32 0), i32 %tmp) ; <i32> [#uses=0]
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store i32 0, i32* %retval
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%1 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %0
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}
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declare i32 @printf(i8*, ...)
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!0 = metadata !{i32 191}
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