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mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-01 05:01:59 +01:00
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

19 lines
485 B
LLVM

; RUN: opt %s -instcombine
define i32 @f(i32 %theNumber) {
entry:
%cmp = icmp sgt i32 %theNumber, -1
call void @llvm.assume(i1 %cmp)
br i1 true, label %if.then, label %if.end
if.then: ; preds = %entry
%shl = shl nuw i32 %theNumber, 1
br label %if.end
if.end: ; preds = %if.then, %entry
%phi = phi i32 [ %shl, %if.then ], [ undef, %entry ]
ret i32 %phi
}
declare void @llvm.assume(i1)