derek.holloway
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57 lines
1.5 KiB
LLVM
57 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc < %s -mtriple=s390x-ibm-zos | FileCheck --check-prefix=CHECK %s
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; The current function's frame address is the address of
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; the optional back chain slot.
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define ptr @fp0() nounwind {
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; CHECK-LABEL: fp0 DS 0H
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; CHECK: la 3,2048(4)
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; CHECK-NEXT: b 2(7)
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entry:
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%0 = tail call ptr @llvm.frameaddress(i32 0)
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ret ptr %0
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}
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; Check that the frame address is correct in a presence
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; of a stack frame.
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define ptr @fp0f() nounwind {
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; CHECK-LABEL: fp0f DS 0H
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; CHECK: stmg 6,7,1904(4)
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; CHECK-NEXT: aghi 4,-160
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; CHECK-NEXT: la 3,2048(4)
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; CHECK-NEXT: lg 7,2072(4)
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; CHECK-NEXT: aghi 4,160
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; CHECK-NEXT: b 2(7)
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entry:
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%0 = alloca i64, align 8
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%1 = tail call ptr @llvm.frameaddress(i32 0)
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ret ptr %1
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}
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; Check the caller's frame address.
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define ptr @fpcaller() nounwind "backchain" {
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; CHECK-LABEL: fpcaller DS 0H
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; CHECK: stmg 4,7,2048(4)
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; CHECK-NEXT: lg 3,2048(4)
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; CHECK-NEXT: lmg 4,7,2048(4)
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; CHECK-NEXT: b 2(7)
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entry:
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%0 = tail call ptr @llvm.frameaddress(i32 1)
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ret ptr %0
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}
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; Check the caller's frame address.
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define ptr @fpcallercaller() nounwind "backchain" {
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; CHECK-LABEL: fpcallercaller DS 0H
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; CHECK: stmg 4,7,2048(4)
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; CHECK-NEXT: lg 1,2048(4)
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; CHECK-NEXT: lg 3,0(1)
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; CHECK-NEXT: lmg 4,7,2048(4)
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; CHECK-NEXT: b 2(7)
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entry:
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%0 = tail call ptr @llvm.frameaddress(i32 2)
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ret ptr %0
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}
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declare ptr @llvm.frameaddress(i32) nounwind readnone
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