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author | Roman Divacky <rdivacky@FreeBSD.org> | 2009-10-14 17:57:32 +0000 |
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committer | Roman Divacky <rdivacky@FreeBSD.org> | 2009-10-14 17:57:32 +0000 |
commit | 59850d0874429601812bc13408cb1f776649027c (patch) | |
tree | b21f6de4e08b89bb7931806bab798fc2a5e3a686 /test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll | |
parent | 18f153bdb9db52e7089a2d5293b96c45a3124a26 (diff) | |
download | src-test-59850d0874429601812bc13408cb1f776649027c.tar.gz src-test-59850d0874429601812bc13408cb1f776649027c.zip |
Notes
Diffstat (limited to 'test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll')
-rw-r--r-- | test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll b/test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll new file mode 100644 index 0000000000000..790fd88c46dd1 --- /dev/null +++ b/test/CodeGen/X86/2009-08-23-SubRegReuseUndo.ll @@ -0,0 +1,69 @@ +; RUN: llc < %s -march=x86 +; PR4753 + +; This function has a sub-register reuse undone. + +@uint8 = external global i32 ; <i32*> [#uses=3] + +declare signext i8 @foo(i32, i8 signext) nounwind readnone + +declare signext i8 @bar(i32, i8 signext) nounwind readnone + +define i32 @uint80(i8 signext %p_52) nounwind { +entry: + %0 = sext i8 %p_52 to i16 ; <i16> [#uses=1] + %1 = tail call i32 @func_24(i16 zeroext %0, i8 signext ptrtoint (i8 (i32, i8)* @foo to i8)) nounwind; <i32> [#uses=1] + %2 = trunc i32 %1 to i8 ; <i8> [#uses=1] + %3 = or i8 %2, 1 ; <i8> [#uses=1] + %4 = tail call i32 @safe(i32 1) nounwind ; <i32> [#uses=0] + %5 = tail call i32 @func_24(i16 zeroext 0, i8 signext undef) nounwind; <i32> [#uses=1] + %6 = trunc i32 %5 to i8 ; <i8> [#uses=1] + %7 = xor i8 %3, %p_52 ; <i8> [#uses=1] + %8 = xor i8 %7, %6 ; <i8> [#uses=1] + %9 = icmp ne i8 %p_52, 0 ; <i1> [#uses=1] + %10 = zext i1 %9 to i8 ; <i8> [#uses=1] + %11 = tail call i32 @func_24(i16 zeroext ptrtoint (i8 (i32, i8)* @bar to i16), i8 signext %10) nounwind; <i32> [#uses=1] + %12 = tail call i32 @func_24(i16 zeroext 0, i8 signext 1) nounwind; <i32> [#uses=0] + br i1 undef, label %bb2, label %bb + +bb: ; preds = %entry + br i1 undef, label %bb2, label %bb3 + +bb2: ; preds = %bb, %entry + br label %bb3 + +bb3: ; preds = %bb2, %bb + %iftmp.2.0 = phi i32 [ 0, %bb2 ], [ 1, %bb ] ; <i32> [#uses=1] + %13 = icmp ne i32 %11, %iftmp.2.0 ; <i1> [#uses=1] + %14 = tail call i32 @safe(i32 -2) nounwind ; <i32> [#uses=0] + %15 = zext i1 %13 to i8 ; <i8> [#uses=1] + %16 = tail call signext i8 @func_53(i8 signext undef, i8 signext 1, i8 signext %15, i8 signext %8) nounwind; <i8> [#uses=0] + br i1 undef, label %bb5, label %bb4 + +bb4: ; preds = %bb3 + %17 = volatile load i32* @uint8, align 4 ; <i32> [#uses=0] + br label %bb5 + +bb5: ; preds = %bb4, %bb3 + %18 = volatile load i32* @uint8, align 4 ; <i32> [#uses=0] + %19 = sext i8 undef to i16 ; <i16> [#uses=1] + %20 = tail call i32 @func_24(i16 zeroext %19, i8 signext 1) nounwind; <i32> [#uses=0] + br i1 undef, label %return, label %bb6.preheader + +bb6.preheader: ; preds = %bb5 + %21 = sext i8 %p_52 to i32 ; <i32> [#uses=1] + %22 = volatile load i32* @uint8, align 4 ; <i32> [#uses=0] + %23 = tail call i32 (...)* @safefuncts(i32 %21, i32 1) nounwind; <i32> [#uses=0] + unreachable + +return: ; preds = %bb5 + ret i32 undef +} + +declare i32 @func_24(i16 zeroext, i8 signext) + +declare i32 @safe(i32) + +declare signext i8 @func_53(i8 signext, i8 signext, i8 signext, i8 signext) + +declare i32 @safefuncts(...) |