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Diffstat (limited to 'test/CodeGen/ARM/ifcvt-branch-weight.ll')
-rw-r--r-- | test/CodeGen/ARM/ifcvt-branch-weight.ll | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/ifcvt-branch-weight.ll b/test/CodeGen/ARM/ifcvt-branch-weight.ll new file mode 100644 index 0000000..cd8a561 --- /dev/null +++ b/test/CodeGen/ARM/ifcvt-branch-weight.ll @@ -0,0 +1,42 @@ +; RUN: llc < %s -mtriple=thumbv8 -print-machineinstrs=if-converter -o /dev/null 2>&1 | FileCheck %s + +%struct.S = type { i8* (i8*)*, [1 x i8] } +define internal zeroext i8 @bar(%struct.S* %x, %struct.S* nocapture %y) nounwind readonly { +entry: + %0 = getelementptr inbounds %struct.S* %x, i32 0, i32 1, i32 0 + %1 = load i8* %0, align 1 + %2 = zext i8 %1 to i32 + %3 = and i32 %2, 112 + %4 = icmp eq i32 %3, 0 + br i1 %4, label %return, label %bb + +bb: + %5 = getelementptr inbounds %struct.S* %y, i32 0, i32 1, i32 0 + %6 = load i8* %5, align 1 + %7 = zext i8 %6 to i32 + %8 = and i32 %7, 112 + %9 = icmp eq i32 %8, 0 + br i1 %9, label %return, label %bb2 + +; CHECK: BB#2: derived from LLVM BB %bb2 +; CHECK: Successors according to CFG: BB#3(192) BB#4(192) + +bb2: + %v10 = icmp eq i32 %3, 16 + br i1 %v10, label %bb4, label %bb3, !prof !0 + +bb3: + %v11 = icmp eq i32 %8, 16 + br i1 %v11, label %bb4, label %return, !prof !1 + +bb4: + %v12 = ptrtoint %struct.S* %x to i32 + %phitmp = trunc i32 %v12 to i8 + ret i8 %phitmp + +return: + ret i8 1 +} + +!0 = metadata !{metadata !"branch_weights", i32 4, i32 12} +!1 = metadata !{metadata !"branch_weights", i32 8, i32 16} |