derek.holloway
7502bf64a4
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103 lines
2.7 KiB
LLVM
103 lines
2.7 KiB
LLVM
; RUN: llc -mtriple=sparc -disable-sparc-leaf-proc=0 < %s | FileCheck %s
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; CHECK-LABEL: func_nobody:
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; CHECK: retl
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; CHECK-NEXT: nop
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define void @func_nobody() {
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entry:
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ret void
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}
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; CHECK-LABEL: return_int_const:
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; CHECK: retl
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; CHECK-NEXT: mov 1729, %o0
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define i32 @return_int_const() {
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entry:
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ret i32 1729
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}
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; CHECK-LABEL: return_double_const:
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; CHECK: sethi
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; CHECK: retl
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; CHECK-NEXT: ldd {{.*}}, %f0
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define double @return_double_const() {
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entry:
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ret double 0.000000e+00
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}
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; CHECK-LABEL: leaf_proc_with_args:
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; CHECK: add {{%o[0-1]}}, {{%o[0-1]}}, [[R:%[go][0-7]]]
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; CHECK: retl
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; CHECK-NEXT: add [[R]], %o2, %o0
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define i32 @leaf_proc_with_args(i32 %a, i32 %b, i32 %c) {
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entry:
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%0 = add nsw i32 %b, %a
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%1 = add nsw i32 %0, %c
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ret i32 %1
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}
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; CHECK-LABEL: leaf_proc_with_args_in_stack:
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; CHECK-DAG: ld [%sp+92], {{%[go][0-7]}}
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; CHECK-DAG: ld [%sp+96], {{%[go][0-7]}}
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; CHECK: retl
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; CHECK-NEXT: add {{.*}}, %o0
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define i32 @leaf_proc_with_args_in_stack(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
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entry:
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%0 = add nsw i32 %b, %a
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%1 = add nsw i32 %0, %c
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%2 = add nsw i32 %1, %d
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%3 = add nsw i32 %2, %e
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%4 = add nsw i32 %3, %f
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%5 = add nsw i32 %4, %g
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%6 = add nsw i32 %5, %h
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ret i32 %6
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}
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; CHECK-LABEL: leaf_proc_with_local_array:
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; CHECK: add %sp, -104, %sp
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; CHECK: mov 1, [[R1:%[go][0-7]]]
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; CHECK: st [[R1]], [%sp+96]
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; CHECK: mov 2, [[R2:%[go][0-7]]]
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; CHECK: st [[R2]], [%sp+100]
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; CHECK: ld {{.+}}, %o0
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; CHECK: retl
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; CHECK-NEXT: add %sp, 104, %sp
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define i32 @leaf_proc_with_local_array(i32 %a, i32 %b, i32 %c) {
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entry:
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%array = alloca [2 x i32], align 4
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%0 = sub nsw i32 %b, %c
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%1 = getelementptr inbounds [2 x i32], ptr %array, i32 0, i32 0
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store i32 1, ptr %1, align 4
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%2 = getelementptr inbounds [2 x i32], ptr %array, i32 0, i32 1
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store i32 2, ptr %2, align 4
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%3 = getelementptr inbounds [2 x i32], ptr %array, i32 0, i32 %a
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%4 = load i32, ptr %3, align 4
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ret i32 %4
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}
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; Here we have a leaf function where it contains inline assembly, which means
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; that register renumbering might interfere with the register constraints.
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; As a result the function is not marked as being a leaf one.
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; CHECK-LABEL: leaf_proc_give_up
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; CHECK: save %sp, -96, %sp
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; CHECK: ld [%fp+92], %o5
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; CHECK: mov %i5, %o4
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; CHECK: mov %i4, %o3
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; CHECK: mov %i3, %o2
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; CHECK: mov %i2, %o1
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; CHECK: mov %i1, %o0
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; CHECK: mov %i0, %g1
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; CHECK: ret
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; CHECK-NEXT: restore %g0, %o0, %o0
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define i32 @leaf_proc_give_up(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4, i32 %5, i32 %6) {
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Entry:
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%g = call i32 asm sideeffect "", "={o0},{g1},{o0},{o1},{o2},{o3},{o4},{o5}"(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4, i32 %5, i32 %6)
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ret i32 %g
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}
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