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llvm-mirror/test/Transforms/SimplifyCFG/PHINode.ll
Roman Lebedev eda37b998a [SimplifyCFG] MergeBlockIntoPredecessor() already knows how to preserve DomTree
... so just ensure that we pass DomTreeUpdater it into it.

Fixes DomTree preservation for a large number of tests,
all of which are marked as such so that they do not regress.
2020-12-17 01:03:49 +03:00

16 lines
512 B
LLVM

; -simplifycfg -simplifycfg-require-and-preserve-domtree=1 is not folding blocks if there is a PHI node involved. This
; should be fixed eventually
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
define i32 @main(i32 %argc) {
; <label>:0
; CHECK-NOT: br label %InlinedFunctionReturnNode
br label %InlinedFunctionReturnNode
InlinedFunctionReturnNode: ; preds = %0
%X = phi i32 [ 7, %0 ] ; <i32> [#uses=1]
%Y = add i32 %X, %argc ; <i32> [#uses=1]
ret i32 %Y
}