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author | rdivacky <rdivacky@FreeBSD.org> | 2009-10-14 17:57:32 +0000 |
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committer | rdivacky <rdivacky@FreeBSD.org> | 2009-10-14 17:57:32 +0000 |
commit | cd749a9c07f1de2fb8affde90537efa4bc3e7c54 (patch) | |
tree | b21f6de4e08b89bb7931806bab798fc2a5e3a686 /test/Transforms/InstCombine/cast3.ll | |
parent | 72621d11de5b873f1695f391eb95f0b336c3d2d4 (diff) | |
download | FreeBSD-src-cd749a9c07f1de2fb8affde90537efa4bc3e7c54.zip FreeBSD-src-cd749a9c07f1de2fb8affde90537efa4bc3e7c54.tar.gz |
Update llvm to r84119.
Diffstat (limited to 'test/Transforms/InstCombine/cast3.ll')
-rw-r--r-- | test/Transforms/InstCombine/cast3.ll | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/cast3.ll b/test/Transforms/InstCombine/cast3.ll new file mode 100644 index 0000000..bc60f55 --- /dev/null +++ b/test/Transforms/InstCombine/cast3.ll @@ -0,0 +1,35 @@ +; RUN: opt < %s -instcombine -S | not grep getelementptr +; PR2831 + +; Don't raise arbitrary inttoptr+arithmetic+ptrtoint to getelementptr. + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" + +define i32 @main(i32 %argc, i8** %argv) nounwind { +entry: + %0 = ptrtoint i8** %argv to i32 ; <i32> [#uses=1] + %1 = add i32 %0, 1 ; <i32> [#uses=1] + ret i32 %1 +} + +; This testcase could theoretically be optimized down to return zero, +; but for now being conservative with ptrtoint/inttoptr is fine. +define i32 @a() nounwind { +entry: + %b = alloca i32 ; <i32*> [#uses=3] + %a = alloca i32 ; <i32*> [#uses=2] + %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] + store i32 1, i32* %b, align 4 + %a1 = ptrtoint i32* %a to i32 ; <i32> [#uses=1] + %b4 = ptrtoint i32* %b to i32 ; <i32> [#uses=1] + %a7 = ptrtoint i32* %a to i32 ; <i32> [#uses=1] + %0 = sub i32 %b4, %a7 ; <i32> [#uses=1] + %1 = add i32 %a1, %0 ; <i32> [#uses=1] + %2 = inttoptr i32 %1 to i32* ; <i32*> [#uses=1] + store i32 0, i32* %2, align 4 + %3 = load i32* %b, align 4 ; <i32> [#uses=1] + br label %return + +return: ; preds = %entry + ret i32 %3 +} |