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author | Chris Lattner <sabre@nondot.org> | 2010-03-05 18:53:28 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-03-05 18:53:28 +0000 |
commit | 4c5fb1a311a7a5e3ceb802f5b26329d30f2713b1 (patch) | |
tree | 7298d685479ddb414402200d2fcbb1baab077b5e /test/Transforms/InstCombine | |
parent | c4155d591b2c28877695543dd8fe195e52922166 (diff) | |
download | llvm-4c5fb1a311a7a5e3ceb802f5b26329d30f2713b1.tar.gz llvm-4c5fb1a311a7a5e3ceb802f5b26329d30f2713b1.tar.bz2 llvm-4c5fb1a311a7a5e3ceb802f5b26329d30f2713b1.tar.xz |
fix PR6512, a case where instcombine would incorrectly merge loads
from different addr spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97813 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine')
-rw-r--r-- | test/Transforms/InstCombine/phi.ll | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/phi.ll b/test/Transforms/InstCombine/phi.ll index f0343e44c2..fc321e9682 100644 --- a/test/Transforms/InstCombine/phi.ll +++ b/test/Transforms/InstCombine/phi.ll @@ -362,3 +362,43 @@ end: ; CHECK-NEXT: ret i64 } +; PR6512 - Shouldn't merge loads from different addr spaces. +define i32 @test16(i32 addrspace(1)* %pointer1, i32 %flag, i32* %pointer2) +nounwind { +entry: + %retval = alloca i32, align 4 ; <i32*> [#uses=2] + %pointer1.addr = alloca i32 addrspace(1)*, align 4 ; <i32 addrspace(1)**> + %flag.addr = alloca i32, align 4 ; <i32*> [#uses=2] + %pointer2.addr = alloca i32*, align 4 ; <i32**> [#uses=2] + %res = alloca i32, align 4 ; <i32*> [#uses=4] + store i32 addrspace(1)* %pointer1, i32 addrspace(1)** %pointer1.addr + store i32 %flag, i32* %flag.addr + store i32* %pointer2, i32** %pointer2.addr + store i32 10, i32* %res + %tmp = load i32* %flag.addr ; <i32> [#uses=1] + %tobool = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] + br i1 %tobool, label %if.then, label %if.else + +return: ; preds = %if.end + %tmp7 = load i32* %retval ; <i32> [#uses=1] + ret i32 %tmp7 + +if.end: ; preds = %if.else, %if.then + %tmp6 = load i32* %res ; <i32> [#uses=1] + store i32 %tmp6, i32* %retval + br label %return + +if.then: ; preds = %entry + %tmp1 = load i32 addrspace(1)** %pointer1.addr ; <i32 addrspace(1)*> + %arrayidx = getelementptr i32 addrspace(1)* %tmp1, i32 0 ; <i32 addrspace(1)*> [#uses=1] + %tmp2 = load i32 addrspace(1)* %arrayidx ; <i32> [#uses=1] + store i32 %tmp2, i32* %res + br label %if.end + +if.else: ; preds = %entry + %tmp3 = load i32** %pointer2.addr ; <i32*> [#uses=1] + %arrayidx4 = getelementptr i32* %tmp3, i32 0 ; <i32*> [#uses=1] + %tmp5 = load i32* %arrayidx4 ; <i32> [#uses=1] + store i32 %tmp5, i32* %res + br label %if.end +} |