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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
55 lines
2.1 KiB
LLVM
55 lines
2.1 KiB
LLVM
; RUN: opt -basicaa -sroa -loop-rotate -licm -S < %s | FileCheck %s
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; The objects *p and *q are aliased to each other, but even though *q is
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; volatile, *p can be considered invariant in the loop. Check if it is moved
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; out of the loop.
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; CHECK: load i32, i32* %p
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; CHECK: for.body:
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; CHECK: load volatile i32, i32* %q
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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; Function Attrs: nounwind uwtable
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define i32 @foo(i32* %p, i32* %q, i32 %n) #0 {
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entry:
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%p.addr = alloca i32*, align 8
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%q.addr = alloca i32*, align 8
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%n.addr = alloca i32, align 4
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%i = alloca i32, align 4
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%s = alloca i32, align 4
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store i32* %p, i32** %p.addr, align 8
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store i32* %q, i32** %q.addr, align 8
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store i32 %n, i32* %n.addr, align 4
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store i32 0, i32* %s, align 4
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store i32 0, i32* %i, align 4
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%0 = load i32, i32* %i, align 4
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%1 = load i32, i32* %n.addr, align 4
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%cmp = icmp slt i32 %0, %1
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%2 = load i32*, i32** %p.addr, align 8
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%3 = load i32, i32* %2, align 4
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%4 = load i32*, i32** %q.addr, align 8
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%5 = load volatile i32, i32* %4, align 4
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%add = add nsw i32 %3, %5
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%6 = load i32, i32* %s, align 4
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%add1 = add nsw i32 %6, %add
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store i32 %add1, i32* %s, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%7 = load i32, i32* %i, align 4
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%inc = add nsw i32 %7, 1
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store i32 %inc, i32* %i, align 4
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br label %for.cond
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for.end: ; preds = %for.cond
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%8 = load i32, i32* %s, align 4
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ret i32 %8
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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