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1; Suppress redundant loads feeding into fake uses.2; RUN: llc -filetype=asm -o - %s --mtriple=x86_64-unknown-unknown | FileCheck %s3; Windows ABI works differently, there's no offset.4;5; Look for the spill6; CHECK: movq %r{{[a-z]+,}} -{{[0-9]+\(%rsp\)}}7; CHECK-NOT: movq -{{[0-9]+\(%rsp\)}}, %r{{[a-z]+}}8 9define dso_local i32 @f(ptr %p) local_unnamed_addr optdebug {10entry:11 call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #112 notail call void (...) @llvm.fake.use(ptr %p)13 ret i32 414}15