return false; // success!
}
+static void printNoVerify(PassManagerBase &PM,
+ const char *Banner) {
+ if (PrintMachineCode)
+ PM.add(createMachineFunctionPrinterPass(dbgs(), Banner));
+}
+
static void printAndVerify(PassManagerBase &PM,
const char *Banner,
bool allowDoubleDefs = false) {
// Branch folding must be run after regalloc and prolog/epilog insertion.
if (OptLevel != CodeGenOpt::None && !DisableBranchFold) {
PM.add(createBranchFoldingPass(getEnableTailMergeDefault()));
- printAndVerify(PM, "After BranchFolding");
+ printNoVerify(PM, "After BranchFolding");
}
// Tail duplication.
if (OptLevel != CodeGenOpt::None && !DisableTailDuplicate) {
PM.add(createTailDuplicatePass(false));
- printAndVerify(PM, "After TailDuplicate");
+ printNoVerify(PM, "After TailDuplicate");
}
PM.add(createGCMachineCodeAnalysisPass());
if (OptLevel != CodeGenOpt::None && !DisableCodePlace) {
PM.add(createCodePlacementOptPass());
- printAndVerify(PM, "After CodePlacementOpt");
+ printNoVerify(PM, "After CodePlacementOpt");
}
if (addPreEmitPass(PM, OptLevel))
- printAndVerify(PM, "After PreEmit passes");
+ printNoVerify(PM, "After PreEmit passes");
return false;
}
--- /dev/null
+; RUN: llc < %s -verify-machineinstrs
+;
+; This test case is transformed into a single basic block by the machine
+; branch folding pass. That makes a complete mess of the %EFLAGS liveness, but
+; we don't care about liveness this late anyway.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.2"
+
+define i32 @main(i32 %argc, i8** nocapture %argv) ssp {
+entry:
+ br i1 undef, label %bb, label %bb2
+
+bb: ; preds = %entry
+ br label %bb2
+
+bb2: ; preds = %bb, %entry
+ br i1 undef, label %bb3, label %bb5
+
+bb3: ; preds = %bb2
+ br label %bb5
+
+bb5: ; preds = %bb3, %bb2
+ br i1 undef, label %bb.nph239, label %bb8
+
+bb.nph239: ; preds = %bb5
+ unreachable
+
+bb8: ; preds = %bb5
+ br i1 undef, label %bb.nph237, label %bb47
+
+bb.nph237: ; preds = %bb8
+ unreachable
+
+bb47: ; preds = %bb8
+ br i1 undef, label %bb49, label %bb48
+
+bb48: ; preds = %bb47
+ unreachable
+
+bb49: ; preds = %bb47
+ br i1 undef, label %bb51, label %bb50
+
+bb50: ; preds = %bb49
+ ret i32 0
+
+bb51: ; preds = %bb49
+ ret i32 0
+}