derek.holloway
7502bf64a4
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74 lines
2.3 KiB
LLVM
74 lines
2.3 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
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%struct.__va_list_tag = type { i32, i32, ptr, ptr }
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declare void @llvm.va_end(ptr) #0
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declare void @llvm.va_start(ptr) #10
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define void @hardf(ptr %fmt, ...) #1 {
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; CHECK-LABEL: hardf
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; When using XMM registers to pass floating-point parameters,
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; we need to spill those for va_start.
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; CHECK: testb %al, %al
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; CHECK: movaps %xmm0, {{.*}}%rsp
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; CHECK: movaps %xmm1, {{.*}}%rsp
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; CHECK: movaps %xmm2, {{.*}}%rsp
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; CHECK: movaps %xmm3, {{.*}}%rsp
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; CHECK: movaps %xmm4, {{.*}}%rsp
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; CHECK: movaps %xmm5, {{.*}}%rsp
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; CHECK: movaps %xmm6, {{.*}}%rsp
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; CHECK: movaps %xmm7, {{.*}}%rsp
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%va = alloca [1 x %struct.__va_list_tag], align 16
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call void @llvm.va_start(ptr %va)
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call void @llvm.va_end(ptr nonnull %va)
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ret void
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}
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define void @softf(ptr %fmt, ...) #2 {
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; CHECK-LABEL: softf
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; For software floating point, floats are passed in general
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; purpose registers, so no need to spill XMM registers.
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; CHECK-NOT: %xmm
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; CHECK: retq
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%va = alloca [1 x %struct.__va_list_tag], align 16
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call void @llvm.va_start(ptr %va)
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call void @llvm.va_end(ptr nonnull %va)
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ret void
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}
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define void @noimplf(ptr %fmt, ...) #3 {
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; CHECK-LABEL: noimplf
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; Even with noimplicitfloat, when using the hardware float API, we
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; need to emit code to spill the XMM registers (PR36507).
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; CHECK: testb %al, %al
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; CHECK: movaps %xmm0, {{.*}}%rsp
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; CHECK: movaps %xmm1, {{.*}}%rsp
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; CHECK: movaps %xmm2, {{.*}}%rsp
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; CHECK: movaps %xmm3, {{.*}}%rsp
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; CHECK: movaps %xmm4, {{.*}}%rsp
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; CHECK: movaps %xmm5, {{.*}}%rsp
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; CHECK: movaps %xmm6, {{.*}}%rsp
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; CHECK: movaps %xmm7, {{.*}}%rsp
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%va = alloca [1 x %struct.__va_list_tag], align 16
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call void @llvm.va_start(ptr %va)
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call void @llvm.va_end(ptr nonnull %va)
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ret void
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}
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define void @noimplsoftf(ptr %fmt, ...) #4 {
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; CHECK-LABEL: noimplsoftf
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; Combining noimplicitfloat and use-soft-float should not assert (PR48528).
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; CHECK-NOT: %xmm
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; CHECK: retq
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%va = alloca [1 x %struct.__va_list_tag], align 16
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call void @llvm.va_start(ptr %va)
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call void @llvm.va_end(ptr nonnull %va)
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ret void
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind uwtable }
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attributes #2 = { nounwind uwtable "use-soft-float"="true" }
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attributes #3 = { noimplicitfloat nounwind uwtable }
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attributes #4 = { noimplicitfloat nounwind uwtable "use-soft-float"="true" }
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