1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 19:52:54 +01:00
llvm-mirror/test/Transforms/SimplifyCFG/speculate-call.ll
Roman Lebedev 785059d651 [SimplifyCFG] TryToSimplifyUncondBranchFromEmptyBlock() 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

24 lines
466 B
LLVM

; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
; CHECK-LABEL: @speculatable_attribute
; CHECK: select
define i32 @speculatable_attribute(i32 %a) {
entry:
%c = icmp sgt i32 %a, 64
br i1 %c, label %end, label %if
if:
%val = call i32 @func() #0
br label %end
end:
%ret = phi i32 [%val, %if], [0, %entry]
ret i32 %ret
}
define i32 @func() #0 {
ret i32 1
}
attributes #0 = { nounwind readnone speculatable }