Enhance BranchProbabilityInfo::calcUnreachableHeuristics for InvokeInst
This is recommit of r256028 with minor fixes in unittests:
CodeGen/Mips/eh.ll
CodeGen/Mips/insn-zero-size-bb.ll
Original commit message:
When identifying blocks post-dominated by an unreachable-terminated block
in BranchProbabilityInfo, consider only the edge to the normal destination
block if the terminator is InvokeInst and let calcInvokeHeuristics() decide
edge weights for the InvokeInst.
llvm-svn: 256202
diff --git a/llvm/test/CodeGen/X86/catchret-empty-fallthrough.ll b/llvm/test/CodeGen/X86/catchret-empty-fallthrough.ll
index 5405d57..7ad1033 100644
--- a/llvm/test/CodeGen/X86/catchret-empty-fallthrough.ll
+++ b/llvm/test/CodeGen/X86/catchret-empty-fallthrough.ll
@@ -34,12 +34,14 @@
; CHECK-LABEL: foo: # @foo
; CHECK: testb $1, %cl
-; CHECK: jne .LBB0_[[return:[0-9]+]]
+; CHECK: je .LBB0_[[try:[0-9]+]]
+; CHECK: .LBB0_[[return:[0-9]+]]:
+; CHECK: retq
+; CHECK: .LBB0_[[try]]:
; CHECK: .Ltmp0:
; CHECK: callq bar
; CHECK: .Ltmp1:
; CHECK: .LBB0_[[catch:[0-9]+]]:
-; CHECK: .LBB0_[[return]]:
; CHECK: .seh_handlerdata
; CHECK-NEXT: .Lfoo$parent_frame_offset = 32