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1; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s2 3%struct.__va_list_tag = type { i32, i32, ptr, ptr }4 5declare void @llvm.va_end(ptr) #06declare void @llvm.va_start(ptr) #107 8define void @hardf(ptr %fmt, ...) #1 {9; CHECK-LABEL: hardf10; When using XMM registers to pass floating-point parameters,11; we need to spill those for va_start.12; CHECK: testb %al, %al13; CHECK: movaps %xmm0, {{.*}}%rsp14; CHECK: movaps %xmm1, {{.*}}%rsp15; CHECK: movaps %xmm2, {{.*}}%rsp16; CHECK: movaps %xmm3, {{.*}}%rsp17; CHECK: movaps %xmm4, {{.*}}%rsp18; CHECK: movaps %xmm5, {{.*}}%rsp19; CHECK: movaps %xmm6, {{.*}}%rsp20; CHECK: movaps %xmm7, {{.*}}%rsp21 %va = alloca [1 x %struct.__va_list_tag], align 1622 call void @llvm.va_start(ptr %va)23 call void @llvm.va_end(ptr nonnull %va)24 ret void25}26 27define void @softf(ptr %fmt, ...) #2 {28; CHECK-LABEL: softf29; For software floating point, floats are passed in general30; purpose registers, so no need to spill XMM registers.31; CHECK-NOT: %xmm32; CHECK: retq33 %va = alloca [1 x %struct.__va_list_tag], align 1634 call void @llvm.va_start(ptr %va)35 call void @llvm.va_end(ptr nonnull %va)36 ret void37}38 39define void @noimplf(ptr %fmt, ...) #3 {40; CHECK-LABEL: noimplf41; Even with noimplicitfloat, when using the hardware float API, we42; need to emit code to spill the XMM registers (PR36507).43; CHECK: testb %al, %al44; CHECK: movaps %xmm0, {{.*}}%rsp45; CHECK: movaps %xmm1, {{.*}}%rsp46; CHECK: movaps %xmm2, {{.*}}%rsp47; CHECK: movaps %xmm3, {{.*}}%rsp48; CHECK: movaps %xmm4, {{.*}}%rsp49; CHECK: movaps %xmm5, {{.*}}%rsp50; CHECK: movaps %xmm6, {{.*}}%rsp51; CHECK: movaps %xmm7, {{.*}}%rsp52 %va = alloca [1 x %struct.__va_list_tag], align 1653 call void @llvm.va_start(ptr %va)54 call void @llvm.va_end(ptr nonnull %va)55 ret void56}57 58define void @noimplsoftf(ptr %fmt, ...) #4 {59; CHECK-LABEL: noimplsoftf60; Combining noimplicitfloat and use-soft-float should not assert (PR48528).61; CHECK-NOT: %xmm62; CHECK: retq63 %va = alloca [1 x %struct.__va_list_tag], align 1664 call void @llvm.va_start(ptr %va)65 call void @llvm.va_end(ptr nonnull %va)66 ret void67}68 69attributes #0 = { nounwind }70attributes #1 = { nounwind uwtable }71attributes #2 = { nounwind uwtable "use-soft-float"="true" }72attributes #3 = { noimplicitfloat nounwind uwtable }73attributes #4 = { noimplicitfloat nounwind uwtable "use-soft-float"="true" }74