diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Support/APInt.cpp | 2 | ||||
| -rw-r--r-- | lib/Target/X86/README.txt | 10 |
2 files changed, 5 insertions, 7 deletions
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp index 77033428b5..08f36d2af3 100644 --- a/lib/Support/APInt.cpp +++ b/lib/Support/APInt.cpp @@ -1505,7 +1505,7 @@ APInt::ms APInt::magic() const { r2 = r2 - ad; } delta = ad - r2; - } while (q1.ule(delta) || (q1 == delta && r1 == 0)); + } while (q1.ult(delta) || (q1 == delta && r1 == 0)); mag.m = q2 + 1; if (d.isNegative()) mag.m = -mag.m; // resulting magic number diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index c10e1709f6..ed3bff150b 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -1888,12 +1888,10 @@ Compiles to: $clang t.c -S -o - -O3 -mkernel -fomit-frame-pointer _t: ## @t movslq %edi, %rax - imulq $-1431655765, %rax, %rcx ## imm = 0xFFFFFFFFAAAAAAAB - shrq $32, %rcx - addl %ecx, %eax - movl %eax, %ecx - shrl $31, %ecx - shrl %eax + imulq $1431655766, %rax, %rax ## imm = 0x55555556 + movq %rax, %rcx + shrq $63, %rcx + shrq $32, %rax addl %ecx, %eax movsbl %al, %eax ret |