diff options
Diffstat (limited to 'llvm/test/Transforms/PhaseOrdering/thread-uncond-bb.ll')
| -rw-r--r-- | llvm/test/Transforms/PhaseOrdering/thread-uncond-bb.ll | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/llvm/test/Transforms/PhaseOrdering/thread-uncond-bb.ll b/llvm/test/Transforms/PhaseOrdering/thread-uncond-bb.ll new file mode 100644 index 0000000..17146d7 --- /dev/null +++ b/llvm/test/Transforms/PhaseOrdering/thread-uncond-bb.ll @@ -0,0 +1,62 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 +; RUN: opt < %s -O3 -S | FileCheck %s + +define i32 @thread_uncond_bb_cmp(i1 %c, i32 %v) { +; CHECK-LABEL: define i32 @thread_uncond_bb_cmp( +; CHECK-SAME: i1 [[C:%.*]], i32 [[V:%.*]]) local_unnamed_addr { +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 [[C]], label [[DO_END:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: tail call void @dummy() +; CHECK-NEXT: br label [[DO_END]] +; CHECK: return: +; CHECK-NEXT: [[RETVAL:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[V]], [[IF_THEN]] ] +; CHECK-NEXT: ret i32 [[RETVAL]] +; +entry: + br i1 %c, label %do.end, label %if.then + +if.then: ; preds = %entry + call void @dummy() + %tobool = icmp eq i32 %v, 0 + br i1 %tobool, label %do.end, label %return + +do.end: ; preds = %entry, %if.then + br label %return + +return: ; preds = %if.then, %do.end + %retval = phi i32 [ 0, %do.end ], [ %v, %if.then ] + ret i32 %retval +} + +define i32 @thread_uncond_bb_cmp_zext(i1 %c, i32 %v) { +; CHECK-LABEL: define i32 @thread_uncond_bb_cmp_zext( +; CHECK-SAME: i1 [[C:%.*]], i32 [[V:%.*]]) local_unnamed_addr { +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 [[C]], label [[DO_END:%.*]], label [[IF_THEN:%.*]] +; CHECK: if.then: +; CHECK-NEXT: tail call void @dummy() +; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[V]], 0 +; CHECK-NEXT: [[SPEC_SELECT:%.*]] = zext i1 [[TOBOOL]] to i32 +; CHECK-NEXT: br label [[DO_END]] +; CHECK: return: +; CHECK-NEXT: [[RETVAL:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[SPEC_SELECT]], [[IF_THEN]] ] +; CHECK-NEXT: ret i32 [[RETVAL]] +; +entry: + br i1 %c, label %do.end, label %if.then + +if.then: ; preds = %entry + call void @dummy() + %tobool = icmp eq i32 %v, 0 + br i1 %tobool, label %do.end, label %return + +do.end: ; preds = %entry, %if.then + br label %return + +return: ; preds = %if.then, %do.end + %retval = phi i32 [ 0, %do.end ], [ 1, %if.then ] + ret i32 %retval +} + +declare void @dummy() |