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llvm-project/llvm/test/CodeGen/X86/umul-with-carry.ll

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Fix the remaining TCL-style quotes found in the testsuite. This is another mechanical change accomplished though the power of terrible Perl scripts. I have manually switched some "s to 's to make escaping simpler. While I started this to fix tests that aren't run in all configurations, the massive number of tests is due to a really frustrating fragility of our testing infrastructure: things like 'grep -v', 'not grep', and 'expected failures' can mask broken tests all too easily. Essentially, I'm deeply disturbed that I can change the testsuite so radically without causing any change in results for most platforms. =/ llvm-svn: 159547
2012-07-03 03:09:46 +08:00
; RUN: llc < %s -march=x86 | grep "jc" | count 1
- Use patterns instead of creating completely new instruction matching patterns, which are identical to the original patterns. - Change the multiply with overflow so that we distinguish between signed and unsigned multiplication. Currently, unsigned multiplication with overflow isn't working! llvm-svn: 60963
2008-12-13 05:15:41 +08:00
; XFAIL: *
; FIXME: umul-with-overflow not supported yet.
Add sub/mul overflow intrinsics. This currently doesn't have a target-independent way of determining overflow on multiplication. It's very tricky. Patch by Zoltan Varga! llvm-svn: 60800
2008-12-10 06:08:41 +08:00
@ok = internal constant [4 x i8] c"%d\0A\00"
@no = internal constant [4 x i8] c"no\0A\00"
- Use patterns instead of creating completely new instruction matching patterns, which are identical to the original patterns. - Change the multiply with overflow so that we distinguish between signed and unsigned multiplication. Currently, unsigned multiplication with overflow isn't working! llvm-svn: 60963
2008-12-13 05:15:41 +08:00
define i1 @func(i32 %v1, i32 %v2) nounwind {
Add sub/mul overflow intrinsics. This currently doesn't have a target-independent way of determining overflow on multiplication. It's very tricky. Patch by Zoltan Varga! llvm-svn: 60800
2008-12-10 06:08:41 +08:00
entry:
%t = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %v1, i32 %v2)
%sum = extractvalue {i32, i1} %t, 0
%obit = extractvalue {i32, i1} %t, 1
br i1 %obit, label %carry, label %normal
normal:
%t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind
ret i1 true
carry:
%t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind
ret i1 false
}
declare i32 @printf(i8*, ...) nounwind
declare {i32, i1} @llvm.umul.with.overflow.i32(i32, i32)