1; RUN: llc %s -mattr=+avx -o - | FileCheck %s 2; Originally from http://llvm.org/PR21743. 3 4target triple = "x86_64-pc-win32-elf" 5 6; Copy propagation may remove COPYs if the result is only used by undef 7; operands. 8; 9; CHECK-LABEL: foo: 10; CHECK: movl $339752784, %e[[INDIRECT_CALL1:[a-z]+]] 11; CHECK: callq *%r[[INDIRECT_CALL1]] 12; Copy the result in a temporary. 13; Note: Technically the regalloc could have been smarter and this move not 14; required, which would have hidden the bug. 15; CHECK: vmovapd %xmm0, [[TMP:%xmm[0-9]+]] 16; CHECK-NOT: vxorps %xmm0, %xmm0, %xmm0 17; CHECK-NEXT: vcvtsi2sdq %rsi, %xmm0, %xmm6 18; CHECK: movl $339772768, %e[[INDIRECT_CALL2:[a-z]+]] 19; CHECK-NOT: vmovapd %xmm7, %xmm0 20; CHECK-NEXT: vmovapd %xmm6, %xmm1 21; Set TMP in the first argument of the second call. 22; CHECK_NEXT: callq *%r[[INDIRECT_CALL2]] 23; CHECK: retq 24define double @foo(i64 %arg) { 25top: 26 %tmp = call double inttoptr (i64 339752784 to double (double, double)*)(double 1.000000e+00, double 0.000000e+00) 27 tail call void asm sideeffect "", "x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{dirflag},~{fpsr},~{flags}"(double %tmp) 28 %tmp1 = sitofp i64 %arg to double 29 call void inttoptr (i64 339772768 to void (double, double)*)(double %tmp, double %tmp1) 30 %tmp3 = fadd double %tmp1, %tmp 31 ret double %tmp3 32} 33