| Eli Friedman | d102a03 | 2011-09-22 18:56:30 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -scalarrepl -S | FileCheck %s |
| 2 | ; PR10987 |
| 3 | |
| 4 | ; Make sure scalarrepl doesn't move a load across an invoke which could |
| 5 | ; modify the loaded value. |
| 6 | ; (The PHI could theoretically be transformed by splitting the critical |
| 7 | ; edge, but scalarrepl doesn't modify the CFG, at least at the moment.) |
| 8 | |
| 9 | declare void @extern_fn(i32*) |
| 10 | declare i32 @extern_fn2(i32) |
| 11 | declare i32 @__gcc_personality_v0(i32, i64, i8*, i8*) |
| 12 | |
| 13 | define void @odd_fn(i1) noinline { |
| 14 | %retptr1 = alloca i32 |
| 15 | %retptr2 = alloca i32 |
| 16 | br i1 %0, label %then, label %else |
| 17 | |
| 18 | then: ; preds = %2 |
| 19 | invoke void @extern_fn(i32* %retptr1) |
| 20 | to label %join unwind label %unwind |
| 21 | |
| 22 | else: ; preds = %2 |
| 23 | store i32 3, i32* %retptr2 |
| 24 | br label %join |
| 25 | |
| 26 | join: ; preds = %then, %else |
| 27 | %storemerge.in = phi i32* [ %retptr2, %else ], [ %retptr1, %then ] |
| 28 | %storemerge = load i32* %storemerge.in |
| 29 | %x3 = call i32 @extern_fn2(i32 %storemerge) |
| 30 | ret void |
| 31 | |
| 32 | unwind: ; preds = %then |
| 33 | %info = landingpad { i8*, i32 } personality i32 (i32, i64, i8*, i8*)* @__gcc_personality_v0 |
| 34 | cleanup |
| 35 | call void @extern_fn(i32* null) |
| 36 | unreachable |
| 37 | } |
| 38 | |
| 39 | ; CHECK: define void @odd_fn |
| 40 | ; CHECK: %storemerge.in = phi i32* [ %retptr2, %else ], [ %retptr1, %then ] |