diff options
Diffstat (limited to 'compiler-rt/lib/builtins/i386/ashrdi3.S')
| -rw-r--r-- | compiler-rt/lib/builtins/i386/ashrdi3.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/compiler-rt/lib/builtins/i386/ashrdi3.S b/compiler-rt/lib/builtins/i386/ashrdi3.S index 3c4a4239a5e..3cca4782aea 100644 --- a/compiler-rt/lib/builtins/i386/ashrdi3.S +++ b/compiler-rt/lib/builtins/i386/ashrdi3.S @@ -23,10 +23,10 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) #endif psrlq %xmm2, %xmm0 // unsigned shift input by count - + testl %eax, %eax // check the sign-bit of the input jns 1f // early out for positive inputs - + // If the input is negative, we need to construct the shifted sign bit // to or into the result, as xmm does not have a signed right shift. pcmpeqb %xmm1, %xmm1 // -1ULL @@ -36,7 +36,7 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) psubq %xmm1, %xmm2 // 64 - count psllq %xmm2, %xmm1 // -1 << (64 - count) = leading sign bits por %xmm1, %xmm0 - + // Move the result back to the general purpose registers and return 1: movd %xmm0, %eax psrlq $32, %xmm0 @@ -52,14 +52,14 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) movl 12(%esp), %ecx // Load count movl 8(%esp), %edx // Load high movl 4(%esp), %eax // Load low - + testl $0x20, %ecx // If count >= 32 jnz 1f // goto 1 shrdl %cl, %edx, %eax // right shift low by count sarl %cl, %edx // right shift high by count ret - + 1: movl %edx, %eax // Move high to low sarl $31, %edx // clear high sarl %cl, %eax // shift low by count - 32 |
