Files
clang-p2996/llvm/test/Transforms/NewGVN/verify-memoryphi.ll
Bjorn Pettersson 4f73528403 [test][NewGVN] Use -passes=newgvn instead of -newgvn
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
2022-01-28 13:58:22 +01:00

30 lines
703 B
LLVM

; Skip dead MemoryPhis when performing memory congruency verification
; in NewGVN.
; RUN: opt -S -passes=newgvn %s | FileCheck %s
; REQUIRES: asserts
; CHECK: define void @tinkywinky() {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label %body, label %end
; CHECK: body:
; CHECK-NEXT: store i8 poison, i8* null
; CHECK-NEXT: br label %end
; CHECK: end:
; CHECK-NEXT: ret void
; CHECK-NEXT: }
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
define void @tinkywinky() {
entry:
call void @llvm.lifetime.start.p0i8(i64 4, i8* undef)
br i1 false, label %body, label %end
body:
call void @llvm.lifetime.start.p0i8(i64 4, i8* undef)
br label %end
end:
ret void
}