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| author | Nick Lewycky <nicholas@mxc.ca> | 2012-02-25 20:19:07 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2012-02-25 20:19:07 +0000 |
| commit | 28e215ba63164f201292f8c77bf038b4282aa052 (patch) | |
| tree | 39f1ffa20bb69ab0f1d72207445d08f400eff7cf /test/Transforms/InstSimplify/compare.ll | |
| parent | 6bfb9d6a13261948c07599922246ac80e2ba66d0 (diff) | |
An argument and a local identified object (eg. a noalias call) could turn out
equal if both are null. In the test, scope type %t and global @y by adding a
'gep' prefix to them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151452 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstSimplify/compare.ll')
| -rw-r--r-- | test/Transforms/InstSimplify/compare.ll | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/test/Transforms/InstSimplify/compare.ll b/test/Transforms/InstSimplify/compare.ll index 85aea19e69..ea43f5fa45 100644 --- a/test/Transforms/InstSimplify/compare.ll +++ b/test/Transforms/InstSimplify/compare.ll @@ -41,14 +41,15 @@ define i1 @gep2() { } ; PR11238 -%t = type { i32, i32 } -@y = global %t zeroinitializer, align 8 +%gept = type { i32, i32 } +@gepy = global %gept zeroinitializer, align 8 +@gepz = extern_weak global %gept define i1 @gep3() { ; CHECK: @gep3 - %x = alloca %t, align 8 - %a = getelementptr %t* %x, i64 0, i32 0 - %b = getelementptr %t* %x, i64 0, i32 1 + %x = alloca %gept, align 8 + %a = getelementptr %gept* %x, i64 0, i32 0 + %b = getelementptr %gept* %x, i64 0, i32 1 %equal = icmp eq i32* %a, %b ret i1 %equal ; CHECK-NEXT: ret i1 false @@ -56,9 +57,9 @@ define i1 @gep3() { define i1 @gep4() { ; CHECK: @gep4 - %x = alloca %t, align 8 - %a = getelementptr %t* @y, i64 0, i32 0 - %b = getelementptr %t* @y, i64 0, i32 1 + %x = alloca %gept, align 8 + %a = getelementptr %gept* @gepy, i64 0, i32 0 + %b = getelementptr %gept* @gepy, i64 0, i32 1 %equal = icmp eq i32* %a, %b ret i1 %equal ; CHECK-NEXT: ret i1 false @@ -66,24 +67,33 @@ define i1 @gep4() { define i1 @gep5() { ; CHECK: @gep5 - %x = alloca %t, align 8 - %a = getelementptr inbounds %t* %x, i64 0, i32 1 - %b = getelementptr %t* @y, i64 0, i32 0 + %x = alloca %gept, align 8 + %a = getelementptr inbounds %gept* %x, i64 0, i32 1 + %b = getelementptr %gept* @gepy, i64 0, i32 0 %equal = icmp eq i32* %a, %b ret i1 %equal ; CHECK-NEXT: ret i1 false } -define i1 @gep6(%t* %x) { +define i1 @gep6(%gept* %x) { ; Same as @gep3 but potentially null. ; CHECK: @gep6 - %a = getelementptr %t* %x, i64 0, i32 0 - %b = getelementptr %t* %x, i64 0, i32 1 + %a = getelementptr %gept* %x, i64 0, i32 0 + %b = getelementptr %gept* %x, i64 0, i32 1 %equal = icmp eq i32* %a, %b ret i1 %equal ; CHECK-NEXT: ret i1 false } +define i1 @gep7(%gept* %x) { +; CHECK: @gep7 + %a = getelementptr %gept* %x, i64 0, i32 0 + %b = getelementptr %gept* @gepz, i64 0, i32 0 + %equal = icmp eq i32* %a, %b + ret i1 %equal +; CHECK: ret i1 %equal +} + define i1 @zext(i32 %x) { ; CHECK: @zext %e1 = zext i32 %x to i64 |