diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/xaluo.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/xaluo.ll | 38 |
1 files changed, 9 insertions, 29 deletions
diff --git a/llvm/test/CodeGen/X86/xaluo.ll b/llvm/test/CodeGen/X86/xaluo.ll index 5ee30673dbc..9155350e65d 100644 --- a/llvm/test/CodeGen/X86/xaluo.ll +++ b/llvm/test/CodeGen/X86/xaluo.ll @@ -1372,43 +1372,23 @@ define {i64, i1} @uaddoovf(i64 %a, i64 %b) { define {i64, i1} @usuboovf(i64 %a, i64 %b) { ; SDAG-LABEL: usuboovf: ; SDAG: ## BB#0: -; SDAG-NEXT: subq %rdi, %rdi -; SDAG-NEXT: sbbb %r8b, %r8b -; SDAG-NEXT: movq $-1, %rax -; SDAG-NEXT: subq %rsi, %rax -; SDAG-NEXT: sbbb %cl, %cl -; SDAG-NEXT: subq %rdi, %rax -; SDAG-NEXT: sbbb %dl, %dl -; SDAG-NEXT: orb %cl, %dl -; SDAG-NEXT: orb %r8b, %dl -; SDAG-NEXT: andb $1, %dl +; SDAG-NEXT: notq %rsi +; SDAG-NEXT: xorl %edx, %edx +; SDAG-NEXT: movq %rsi, %rax ; SDAG-NEXT: retq ; ; FAST-LABEL: usuboovf: ; FAST: ## BB#0: -; FAST-NEXT: subq %rdi, %rdi -; FAST-NEXT: sbbb %r8b, %r8b -; FAST-NEXT: movq $-1, %rax -; FAST-NEXT: subq %rsi, %rax -; FAST-NEXT: sbbb %cl, %cl -; FAST-NEXT: subq %rdi, %rax -; FAST-NEXT: sbbb %dl, %dl -; FAST-NEXT: orb %cl, %dl -; FAST-NEXT: orb %r8b, %dl -; FAST-NEXT: andb $1, %dl +; FAST-NEXT: notq %rsi +; FAST-NEXT: xorl %edx, %edx +; FAST-NEXT: movq %rsi, %rax ; FAST-NEXT: retq ; ; KNL-LABEL: usuboovf: ; KNL: ## BB#0: -; KNL-NEXT: subq %rdi, %rdi -; KNL-NEXT: sbbb %dl, %dl -; KNL-NEXT: movq $-1, %rax -; KNL-NEXT: subq %rsi, %rax -; KNL-NEXT: sbbb %cl, %cl -; KNL-NEXT: orb %dl, %cl -; KNL-NEXT: subq %rdi, %rax -; KNL-NEXT: sbbb %dl, %dl -; KNL-NEXT: orb %cl, %dl +; KNL-NEXT: notq %rsi +; KNL-NEXT: xorl %edx, %edx +; KNL-NEXT: movq %rsi, %rax ; KNL-NEXT: retq %t0 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %a) %v0 = extractvalue {i64, i1} %t0, 0 |
