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llvm-mirror/test/CodeGen/X86/add-of-carry.ll
Stephen Lin 3ae734a60c 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
2013-07-13 20:38:47 +00:00

47 lines
1.1 KiB
LLVM

; RUN: llc < %s -march=x86 | FileCheck %s
; <rdar://problem/8449754>
define i32 @test1(i32 %sum, i32 %x) nounwind readnone ssp {
entry:
; CHECK-LABEL: test1:
; CHECK: cmpl %ecx, %eax
; CHECK-NOT: addl
; CHECK: adcl $0, %eax
%add4 = add i32 %x, %sum
%cmp = icmp ult i32 %add4, %x
%inc = zext i1 %cmp to i32
%z.0 = add i32 %add4, %inc
ret i32 %z.0
}
; Instcombine transforms test1 into test2:
; CHECK-LABEL: test2:
; CHECK: movl
; CHECK-NEXT: addl
; CHECK-NEXT: adcl $0
; CHECK-NEXT: ret
define i32 @test2(i32 %sum, i32 %x) nounwind readnone ssp {
entry:
%uadd = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %x, i32 %sum)
%0 = extractvalue { i32, i1 } %uadd, 0
%cmp = extractvalue { i32, i1 } %uadd, 1
%inc = zext i1 %cmp to i32
%z.0 = add i32 %0, %inc
ret i32 %z.0
}
; <rdar://problem/12579915>
define i32 @test3(i32 %x, i32 %y, i32 %res) nounwind uwtable readnone ssp {
entry:
%cmp = icmp ugt i32 %x, %y
%dec = sext i1 %cmp to i32
%dec.res = add nsw i32 %dec, %res
ret i32 %dec.res
; CHECK-LABEL: test3:
; CHECK: cmpl
; CHECK: sbbl
; CHECK: ret
}
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone