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llvm-project/llvm/test/CodeGen/X86/critical-edge-split-2.ll

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fix PR8642: if a critical edge has a PHI value that can trap, isel is *required* to split the edge. PHI values get evaluated on the edge, not in their predecessor block. llvm-svn: 122170
2010-12-19 12:58:57 +08:00
; RUN: llc < %s | FileCheck %s
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"
target triple = "x86_64-apple-darwin10.0.0"
%0 = type <{ %1, %1 }>
%1 = type { i8, i8, i8, i8 }
@g_2 = global %0 zeroinitializer
@g_4 = global %1 zeroinitializer, align 4
; PR8642
define i16 @test1(i1 zeroext %C, i8** nocapture %argv) nounwind ssp {
entry:
br i1 %C, label %cond.end.i, label %cond.false.i
cond.false.i: ; preds = %entry
br label %cond.end.i
cond.end.i: ; preds = %entry
[opaque pointer type] Add textual IR support for explicit type parameter to gep operator Similar to gep (r230786) and load (r230794) changes. Similar migration script can be used to update test cases, which successfully migrated all of LLVM and Polly, but about 4 test cases needed manually changes in Clang. (this script will read the contents of stdin and massage it into stdout - wrap it in the 'apply.sh' script shown in previous commits + xargs to apply it over a large set of test cases) import fileinput import sys import re rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL) def conv(match): line = match.group(1) line += match.group(4) line += ", " line += match.group(2) return line line = sys.stdin.read() off = 0 for match in re.finditer(rep, line): sys.stdout.write(line[off:match.start()]) sys.stdout.write(conv(match)) off = match.end() sys.stdout.write(line[off:]) llvm-svn: 232184
2015-03-14 02:20:45 +08:00
%call1 = phi i16 [ trunc (i32 srem (i32 1, i32 zext (i1 icmp eq (%1* bitcast (i8* getelementptr inbounds (%0, %0* @g_2, i64 0, i32 1, i32 0) to %1*), %1* @g_4) to i32)) to i16), %cond.false.i ], [ 1, %entry ]
fix PR8642: if a critical edge has a PHI value that can trap, isel is *required* to split the edge. PHI values get evaluated on the edge, not in their predecessor block. llvm-svn: 122170
2010-12-19 12:58:57 +08:00
ret i16 %call1
}
Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258
2013-07-14 04:38:47 +08:00
; CHECK-LABEL: test1:
fix PR8642: if a critical edge has a PHI value that can trap, isel is *required* to split the edge. PHI values get evaluated on the edge, not in their predecessor block. llvm-svn: 122170
2010-12-19 12:58:57 +08:00
; CHECK: testb %dil, %dil
; CHECK: jne LBB0_2
; CHECK: divl
; CHECK: LBB0_2: