diff options
| -rw-r--r-- | lib/Target/README.txt | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 6b4e33ea34..12a71778a9 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -1783,13 +1783,12 @@ entry: } Generated code: - addq %rcx, %rdx - movl $0, %eax - adcq $0, %rax - addq %r8, %rax - movq %rax, (%rdi) - movq %rdx, (%rsi) - ret + addq %rcx, %rdx + sbbq %rax, %rax + subq %rax, %r8 + movq %r8, (%rdi) + movq %rdx, (%rsi) + ret Expected code: addq %rcx, %rdx @@ -1798,12 +1797,6 @@ Expected code: movq %rdx, (%rsi) ret -The generated SelectionDAG has an ADD of an ADDE, where both operands of the -ADDE are zero. Replacing one of the operands of the ADDE with the other operand -of the ADD, and replacing the ADD with the ADDE, should give the desired result. - -(That said, we are doing a lot better than gcc on this testcase. :) ) - //===---------------------------------------------------------------------===// Switch lowering generates less than ideal code for the following switch: |