4f73528403
Use the new PM syntax when specifying the pipeline in regression tests previously running "opt -newgvn ..." Instead we now do "opt -passes=newgvn ..." Notice that this also changes the aa-pipeline to become the default aa-pipeline instead of just basic-aa. Since these tests haven't been explicitly requesting basic-aa in the past (compared to the test cases updated in a separate patch involving "-basic-aa -newgvn") it is assumed that the exact aa-pipeline isn't important for the validity of the test cases. An alternative could have been to add -aa-pipeline=basic-aa as well to the run lines, but that might just add clutter in case the test cases do not care about the aa-pipeline. This is another step to move away from the legacy PM syntax when specifying passes in opt. Differential Revision: https://reviews.llvm.org/D118341
16 lines
616 B
LLVM
16 lines
616 B
LLVM
; Test to make sure malloc's bitcast does not block detection of a store
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; to aliased memory; GVN should not optimize away the load in this program.
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; RUN: opt < %s -passes=newgvn -S | FileCheck %s
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define i64 @test() {
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%1 = tail call i8* @malloc(i64 mul (i64 4, i64 ptrtoint (i64* getelementptr (i64, i64* null, i64 1) to i64))) ; <i8*> [#uses=2]
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store i8 42, i8* %1
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%X = bitcast i8* %1 to i64* ; <i64*> [#uses=1]
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%Y = load i64, i64* %X ; <i64> [#uses=1]
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ret i64 %Y
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; CHECK: %Y = load i64, i64* %X
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; CHECK: ret i64 %Y
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}
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declare noalias i8* @malloc(i64)
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