diff options
Diffstat (limited to 'test/Transforms')
-rw-r--r-- | test/Transforms/IPConstantProp/user-with-multiple-uses.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/Transforms/IPConstantProp/user-with-multiple-uses.ll b/test/Transforms/IPConstantProp/user-with-multiple-uses.ll new file mode 100644 index 0000000000..402ea41167 --- /dev/null +++ b/test/Transforms/IPConstantProp/user-with-multiple-uses.ll @@ -0,0 +1,30 @@ +; RUN: opt < %s -S -ipsccp | FileCheck %s +; PR5596 + +; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate +; the result. + +; CHECK: define i32 @main() noreturn nounwind { +; CHECK-NEXT: entry: +; CHECK-NEXT: %call2 = tail call i32 @wwrite(i64 0) nounwind +; CHECK-NEXT: ret i32 123 + +define i32 @main() noreturn nounwind { +entry: + %call2 = tail call i32 @wwrite(i64 0) nounwind + ret i32 %call2 +} + +define internal i32 @wwrite(i64 %i) nounwind readnone { +entry: + switch i64 %i, label %sw.default [ + i64 3, label %return + i64 10, label %return + ] + +sw.default: + ret i32 123 + +return: + ret i32 0 +} |