1; REQUIRES: x86 2; RUN: llvm-as %s -o %t.o 3 4;; Verify that LTO behavior can be tweaked using -mattr. 5 6; RUN: %lld -mcpu haswell -mllvm -mattr=+fma %t.o -o %t.dylib -dylib 7; RUN: llvm-objdump --no-print-imm-hex -d --section="__text" --no-leading-addr --no-show-raw-insn %t.dylib | FileCheck %s --check-prefix=FMA 8 9; RUN: %lld -mcpu haswell -mllvm -mattr=-fma %t.o -o %t.dylib -dylib 10; RUN: llvm-objdump --no-print-imm-hex -d --section="__text" --no-leading-addr --no-show-raw-insn %t.dylib | FileCheck %s --check-prefix=NO-FMA 11 12; FMA: <_foo>: 13; FMA-NEXT: vrcpss %xmm0, %xmm0, %xmm1 14; FMA-NEXT: vfmsub213ss [[#]](%rip), %xmm1, %xmm0 ## xmm0 = (xmm1 * xmm0) - mem 15; FMA-NEXT: ## 0x 16; FMA-NEXT: vfnmadd132ss %xmm1, %xmm1, %xmm0 17; FMA-NEXT: retq 18 19; NO-FMA: <_foo>: 20; NO-FMA-NEXT: vrcpss %xmm0, %xmm0, %xmm1 21; NO-FMA-NEXT: vmulss %xmm1, %xmm0, %xmm0 22; NO-FMA-NEXT: vmovss [[#]](%rip), %xmm2 ## 0x 23; NO-FMA-NEXT: vsubss %xmm0, %xmm2, %xmm0 24; NO-FMA-NEXT: vmulss %xmm0, %xmm1, %xmm0 25; NO-FMA-NEXT: vaddss %xmm0, %xmm1, %xmm0 26; NO-FMA-NEXT: retq 27 28target triple = "x86_64-apple-darwin" 29target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 30 31define float @foo(float %x) #0 { 32 %div = fdiv fast float 1.0, %x 33 ret float %div 34} 35 36attributes #0 = { "unsafe-fp-math"="true" "reciprocal-estimates"="divf,vec-divf" } 37