1 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=sse2 | FileCheck %s 2 ; Ideally this would compile to 5 multiplies. 3 4 define double @pow_wrapper(double %a) nounwind readonly ssp noredzone { 5 ; CHECK-LABEL: pow_wrapper: 6 ; CHECK: # BB#0: 7 ; CHECK-NEXT: movapd %xmm0, %xmm1 8 ; CHECK-NEXT: mulsd %xmm1, %xmm1 9 ; CHECK-NEXT: mulsd %xmm1, %xmm0 10 ; CHECK-NEXT: mulsd %xmm1, %xmm1 11 ; CHECK-NEXT: mulsd %xmm1, %xmm0 12 ; CHECK-NEXT: mulsd %xmm1, %xmm1 13 ; CHECK-NEXT: mulsd %xmm0, %xmm1 14 ; CHECK-NEXT: movapd %xmm1, %xmm0 15 ; CHECK-NEXT: retq 16 %ret = tail call double @llvm.powi.f64(double %a, i32 15) nounwind ; <double> [#uses=1] 17 ret double %ret 18 } 19 20 define double @pow_wrapper_optsize(double %a) optsize { 21 ; CHECK-LABEL: pow_wrapper_optsize: 22 ; CHECK: # BB#0: 23 ; CHECK-NEXT: movl $15, %edi 24 ; CHECK-NEXT: jmp 25 %ret = tail call double @llvm.powi.f64(double %a, i32 15) nounwind ; <double> [#uses=1] 26 ret double %ret 27 } 28 29 define double @pow_wrapper_minsize(double %a) minsize { 30 ; CHECK-LABEL: pow_wrapper_minsize: 31 ; CHECK: # BB#0: 32 ; CHECK-NEXT: pushq $15 33 ; CHECK: popq %rdi 34 ; CHECK: jmp 35 %ret = tail call double @llvm.powi.f64(double %a, i32 15) nounwind ; <double> [#uses=1] 36 ret double %ret 37 } 38 39 declare double @llvm.powi.f64(double, i32) nounwind readonly 40 41
