70 lines
3.1 KiB
LLVM
70 lines
3.1 KiB
LLVM
; RUN: llc < %s -march=x86
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; PR4753
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; This function has a sub-register reuse undone.
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@uint8 = external global i32 ; <i32*> [#uses=3]
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declare signext i8 @foo(i32, i8 signext) nounwind readnone
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declare signext i8 @bar(i32, i8 signext) nounwind readnone
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define i32 @uint80(i8 signext %p_52) nounwind {
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entry:
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%0 = sext i8 %p_52 to i16 ; <i16> [#uses=1]
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%1 = tail call i32 @func_24(i16 zeroext %0, i8 signext ptrtoint (i8 (i32, i8)* @foo to i8)) nounwind; <i32> [#uses=1]
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%2 = trunc i32 %1 to i8 ; <i8> [#uses=1]
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%3 = or i8 %2, 1 ; <i8> [#uses=1]
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%4 = tail call i32 @safe(i32 1) nounwind ; <i32> [#uses=0]
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%5 = tail call i32 @func_24(i16 zeroext 0, i8 signext undef) nounwind; <i32> [#uses=1]
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%6 = trunc i32 %5 to i8 ; <i8> [#uses=1]
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%7 = xor i8 %3, %p_52 ; <i8> [#uses=1]
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%8 = xor i8 %7, %6 ; <i8> [#uses=1]
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%9 = icmp ne i8 %p_52, 0 ; <i1> [#uses=1]
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%10 = zext i1 %9 to i8 ; <i8> [#uses=1]
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%11 = tail call i32 @func_24(i16 zeroext ptrtoint (i8 (i32, i8)* @bar to i16), i8 signext %10) nounwind; <i32> [#uses=1]
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%12 = tail call i32 @func_24(i16 zeroext 0, i8 signext 1) nounwind; <i32> [#uses=0]
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br i1 undef, label %bb2, label %bb
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bb: ; preds = %entry
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br i1 undef, label %bb2, label %bb3
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bb2: ; preds = %bb, %entry
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br label %bb3
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bb3: ; preds = %bb2, %bb
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%iftmp.2.0 = phi i32 [ 0, %bb2 ], [ 1, %bb ] ; <i32> [#uses=1]
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%13 = icmp ne i32 %11, %iftmp.2.0 ; <i1> [#uses=1]
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%14 = tail call i32 @safe(i32 -2) nounwind ; <i32> [#uses=0]
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%15 = zext i1 %13 to i8 ; <i8> [#uses=1]
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%16 = tail call signext i8 @func_53(i8 signext undef, i8 signext 1, i8 signext %15, i8 signext %8) nounwind; <i8> [#uses=0]
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br i1 undef, label %bb5, label %bb4
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bb4: ; preds = %bb3
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%17 = load volatile i32, i32* @uint8, align 4 ; <i32> [#uses=0]
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br label %bb5
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bb5: ; preds = %bb4, %bb3
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%18 = load volatile i32, i32* @uint8, align 4 ; <i32> [#uses=0]
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%19 = sext i8 undef to i16 ; <i16> [#uses=1]
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%20 = tail call i32 @func_24(i16 zeroext %19, i8 signext 1) nounwind; <i32> [#uses=0]
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br i1 undef, label %return, label %bb6.preheader
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bb6.preheader: ; preds = %bb5
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%21 = sext i8 %p_52 to i32 ; <i32> [#uses=1]
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%22 = load volatile i32, i32* @uint8, align 4 ; <i32> [#uses=0]
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%23 = tail call i32 (...) @safefuncts(i32 %21, i32 1) nounwind; <i32> [#uses=0]
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unreachable
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return: ; preds = %bb5
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ret i32 undef
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}
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declare i32 @func_24(i16 zeroext, i8 signext)
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declare i32 @safe(i32)
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declare signext i8 @func_53(i8 signext, i8 signext, i8 signext, i8 signext)
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declare i32 @safefuncts(...)
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