derek.holloway
7502bf64a4
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82 lines
2.1 KiB
LLVM
82 lines
2.1 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown < %s | FileCheck %s
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define dso_local void @one_instruction() #0 {
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; CHECK-LABEL: one_instruction:
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entry:
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ret void
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; CHECK-NOT: retq
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; CHECK: popq %[[x:[^ ]*]]
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%[[x]]
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}
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local i32 @ordinary_function(i32 %x, i32 %y) #0 {
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; CHECK-LABEL: ordinary_function:
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entry:
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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store i32 %x, ptr %x.addr, align 4
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store i32 %y, ptr %y.addr, align 4
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%0 = load i32, ptr %x.addr, align 4
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%1 = load i32, ptr %y.addr, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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; CHECK-NOT: retq
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; CHECK: popq %[[x:[^ ]*]]
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%[[x]]
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}
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local i32 @no_caller_saved_registers_function(i32 %x, i32 %y) #1 {
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; CHECK-LABEL: no_caller_saved_registers_function:
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entry:
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%x.addr = alloca i32, align 4
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%y.addr = alloca i32, align 4
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store i32 %x, ptr %x.addr, align 4
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store i32 %y, ptr %y.addr, align 4
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%0 = load i32, ptr %x.addr, align 4
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%1 = load i32, ptr %y.addr, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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; CHECK-NOT: retq
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; CHECK: popq %rsi
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%rsi
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}
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local preserve_mostcc void @preserve_most() #0 {
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; CHECK-LABEL: preserve_most:
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entry:
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ret void
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; CHECK-NOT: retq
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; CHECK: popq %r11
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%r11
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}
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local preserve_allcc void @preserve_all() #0 {
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; CHECK-LABEL: preserve_all:
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entry:
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ret void
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; CHECK-NOT: retq
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; CHECK: popq %r11
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%r11
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}
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define { i64, i128 } @ret_i64_i128() #0 {
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; CHECK-LABEL: ret_i64_i128:
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ret { i64, i128 } { i64 1, i128 36893488147419103235 }
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; CHECK-NOT: retq
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; CHECK: popq %rsi
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; CHECK-NEXT: lfence
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; CHECK-NEXT: jmpq *%rsi
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}
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attributes #0 = { "target-features"="+lvi-cfi" }
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attributes #1 = { "no_caller_saved_registers" "target-features"="+lvi-cfi" }
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