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| author | Tim Northover <tnorthover@apple.com> | 2015-12-09 15:54:50 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2015-12-09 15:54:50 +0000 |
| commit | d91d635b36e88ace41794a14df48b3a3267fa5ff (patch) | |
| tree | b421f06455ba6b79d96cbaaa684e91ca7df3b2de /llvm/test/CodeGen/ARM | |
| parent | 88f8014e8ebbb8b43f669e6573db27c5ff432137 (diff) | |
| download | bcm5719-llvm-d91d635b36e88ace41794a14df48b3a3267fa5ff.tar.gz bcm5719-llvm-d91d635b36e88ace41794a14df48b3a3267fa5ff.zip | |
ARM: don't use a deleted node as the BaseReg in complex pattern.
We mutated the DAG, which invalidated the node we were trying to use
as a base register. Sometimes we got away with it, but other times the
node really did get deleted before it was finished with.
Should fix PR25733
llvm-svn: 255120
Diffstat (limited to 'llvm/test/CodeGen/ARM')
| -rw-r--r-- | llvm/test/CodeGen/ARM/shifter_operand.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/shifter_operand.ll b/llvm/test/CodeGen/ARM/shifter_operand.ll index 11a8ee6ef7d..5d44eb0f11d 100644 --- a/llvm/test/CodeGen/ARM/shifter_operand.ll +++ b/llvm/test/CodeGen/ARM/shifter_operand.ll @@ -224,3 +224,18 @@ entry: %conv = zext i8 %0 to i32 ret i32 %conv } + + +define void @test_well_formed_dag(i32 %in1, i32 %in2, i32* %addr) { +; CHECK-LABEL: test_well_formed_dag: +; CHECK-ARM: movw [[SMALL_CONST:r[0-9]+]], #675 +; CHECK-ARM: mul [[SMALL_PROD:r[0-9]+]], r0, [[SMALL_CONST]] +; CHECK-ARM: add {{r[0-9]+}}, r1, [[SMALL_PROD]], lsl #7 + + %mul.small = mul i32 %in1, 675 + store i32 %mul.small, i32* %addr + %mul.big = mul i32 %in1, 86400 + %add = add i32 %in2, %mul.big + store i32 %add, i32* %addr + ret void +} |
