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7c9c6ed761
Essentially the same as the GEP change in r230786.
A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)
import fileinput
import sys
import re
pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")
for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.5 KiB
LLVM
40 lines
1.5 KiB
LLVM
; RUN: opt -simplifycfg -S < %s | FileCheck %s
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; It's not worthwhile to if-convert one of the phi nodes and leave
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; the other behind, because that still requires a branch. If
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; SimplifyCFG if-converts one of the phis, it should do both.
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; CHECK: %div.high.addr.0 = select i1 %cmp1, i32 %div, i32 %high.addr.0
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; CHECK-NEXT: %low.0.add2 = select i1 %cmp1, i32 %low.0, i32 %add2
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; CHECK-NEXT: br label %while.cond
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define i32 @upper_bound(i32* %r, i32 %high, i32 %k) nounwind {
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entry:
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br label %while.cond
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while.cond: ; preds = %if.then, %if.else, %entry
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%high.addr.0 = phi i32 [ %high, %entry ], [ %div, %if.then ], [ %high.addr.0, %if.else ]
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%low.0 = phi i32 [ 0, %entry ], [ %low.0, %if.then ], [ %add2, %if.else ]
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%cmp = icmp ult i32 %low.0, %high.addr.0
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br i1 %cmp, label %while.body, label %while.end
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while.body: ; preds = %while.cond
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%add = add i32 %low.0, %high.addr.0
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%div = udiv i32 %add, 2
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%idxprom = zext i32 %div to i64
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%arrayidx = getelementptr inbounds i32, i32* %r, i64 %idxprom
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%0 = load i32, i32* %arrayidx
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%cmp1 = icmp ult i32 %k, %0
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %while.body
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br label %while.cond
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if.else: ; preds = %while.body
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%add2 = add i32 %div, 1
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br label %while.cond
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while.end: ; preds = %while.cond
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ret i32 %low.0
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}
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