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.section __TEXT,__text,regular,pure_instructions | |
.macosx_version_min 10, 7 | |
.section __TEXT,__literal4,4byte_literals | |
.p2align 2 | |
LCPI0_0: | |
.long 0x4effffff | |
LCPI0_1: | |
.long 0xcf000000 | |
.section __TEXT,__text,regular,pure_instructions | |
.globl _foo | |
.p2align 4, 0x90 | |
_foo: | |
.cfi_startproc | |
pushq %rbp | |
.cfi_def_cfa_offset 16 | |
.cfi_offset %rbp, -16 | |
movq %rsp, %rbp | |
.cfi_def_cfa_register %rbp | |
ucomiss LCPI0_0(%rip), %xmm0 | |
movaps %xmm0, %xmm1 | |
maxss LCPI0_1(%rip), %xmm1 | |
cvttss2si %xmm1, %eax | |
movl $2147483647, %ecx | |
cmovbel %eax, %ecx | |
xorl %eax, %eax | |
ucomiss %xmm0, %xmm0 | |
cmovnpl %ecx, %eax | |
popq %rbp | |
retq | |
.cfi_endproc | |
.subsections_via_symbols |
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.section __TEXT,__text,regular,pure_instructions | |
.macosx_version_min 10, 7 | |
.section __TEXT,__literal4,4byte_literals | |
.p2align 2 | |
LCPI0_0: | |
.long 0x4effffff | |
.section __TEXT,__text,regular,pure_instructions | |
.globl _foo | |
.p2align 4, 0x90 | |
_foo: | |
.cfi_startproc | |
pushq %rbp | |
.cfi_def_cfa_offset 16 | |
.cfi_offset %rbp, -16 | |
movq %rsp, %rbp | |
.cfi_def_cfa_register %rbp | |
cvttss2si %xmm0, %eax | |
ucomiss LCPI0_0(%rip), %xmm0 | |
movl $2147483647, %ecx | |
cmovbel %eax, %ecx | |
xorl %eax, %eax | |
ucomiss %xmm0, %xmm0 | |
cmovnpl %ecx, %eax | |
popq %rbp | |
retq | |
.cfi_endproc | |
.subsections_via_symbols |
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--- a-before.s 2021-04-19 11:00:07.000000000 -0700 | |
+++ b-after.s 2021-04-19 11:00:06.000000000 -0700 | |
@@ -4,8 +4,6 @@ | |
.p2align 2 | |
LCPI0_0: | |
.long 0x4effffff | |
-LCPI0_1: | |
- .long 0xcf000000 | |
.section __TEXT,__text,regular,pure_instructions | |
.globl _foo | |
.p2align 4, 0x90 | |
@@ -16,10 +14,8 @@ | |
.cfi_offset %rbp, -16 | |
movq %rsp, %rbp | |
.cfi_def_cfa_register %rbp | |
+ cvttss2si %xmm0, %eax | |
ucomiss LCPI0_0(%rip), %xmm0 | |
- movaps %xmm0, %xmm1 | |
- maxss LCPI0_1(%rip), %xmm1 | |
- cvttss2si %xmm1, %eax | |
movl $2147483647, %ecx | |
cmovbel %eax, %ecx | |
xorl %eax, %eax |
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#[no_mangle] | |
pub extern "C" fn foo(a: f32) -> i32 { | |
a as i32 | |
} |
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