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Diffstat (limited to 'test/CodeGen/Generic/MachineBranchProb.ll')
| -rw-r--r-- | test/CodeGen/Generic/MachineBranchProb.ll | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/CodeGen/Generic/MachineBranchProb.ll b/test/CodeGen/Generic/MachineBranchProb.ll new file mode 100644 index 000000000000..802ee2cb0558 --- /dev/null +++ b/test/CodeGen/Generic/MachineBranchProb.ll @@ -0,0 +1,32 @@ +; RUN: llc < %s -print-machineinstrs=expand-isel-pseudos -o /dev/null 2>&1 | FileCheck %s + +; Make sure we have the correct weight attached to each successor. +define i32 @test2(i32 %x) nounwind uwtable readnone ssp { +; CHECK: Machine code for function test2: +entry: + %conv = sext i32 %x to i64 + switch i64 %conv, label %return [ + i64 0, label %sw.bb + i64 1, label %sw.bb + i64 4, label %sw.bb + i64 5, label %sw.bb1 + ], !prof !0 +; CHECK: BB#0: derived from LLVM BB %entry +; CHECK: Successors according to CFG: BB#2(64) BB#4(14) +; CHECK: BB#4: derived from LLVM BB %entry +; CHECK: Successors according to CFG: BB#1(10) BB#5(4) +; CHECK: BB#5: derived from LLVM BB %entry +; CHECK: Successors according to CFG: BB#1(4) BB#3(7) + +sw.bb: + br label %return + +sw.bb1: + br label %return + +return: + %retval.0 = phi i32 [ 5, %sw.bb1 ], [ 1, %sw.bb ], [ 0, %entry ] + ret i32 %retval.0 +} + +!0 = metadata !{metadata !"branch_weights", i32 7, i32 6, i32 4, i32 4, i32 64} |