mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 10:42:39 +01:00
a62270de2c
The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
39 lines
1.0 KiB
LLVM
39 lines
1.0 KiB
LLVM
; RUN: opt < %s -gvn -S | FileCheck %s
|
|
|
|
; loop.then is not reachable from loop, so we should be able to deduce that the
|
|
; store through %phi2 cannot alias %ptr1.
|
|
|
|
; CHECK-LABEL: @test1
|
|
define void @test1(i32* %ptr1, i32* %ptr2) {
|
|
; CHECK-LABEL: entry:
|
|
; CHECK: %[[GEP:.*]] = getelementptr inbounds i32, i32* %ptr1, i64 1
|
|
; CHECK: %[[VAL1:.*]] = load i32, i32* %[[GEP]]
|
|
entry:
|
|
br label %loop.preheader
|
|
|
|
loop.preheader:
|
|
%gep1 = getelementptr inbounds i32, i32* %ptr1, i64 1
|
|
br label %loop
|
|
|
|
; CHECK-LABEL: loop:
|
|
; CHECK-NOT: load
|
|
loop:
|
|
%phi1 = phi i32* [ %gep1, %loop.preheader ], [ %phi2, %loop.then ]
|
|
%val1 = load i32, i32* %phi1
|
|
br i1 false, label %loop.then, label %loop.if
|
|
|
|
loop.if:
|
|
%gep2 = getelementptr inbounds i32, i32* %gep1, i64 1
|
|
%val2 = load i32, i32* %gep2
|
|
%cmp = icmp slt i32 %val1, %val2
|
|
br label %loop.then
|
|
|
|
; CHECK-LABEL: loop.then
|
|
; CHECK: store i32 %[[VAL1]], i32* %phi2
|
|
loop.then:
|
|
%phi2 = phi i32* [ %ptr2, %loop ], [ %gep2, %loop.if ]
|
|
store i32 %val1, i32* %phi2
|
|
store i32 0, i32* %ptr1
|
|
br label %loop
|
|
}
|