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clang-p2996/llvm/test/CodeGen/SystemZ/builtin-setjmp-alloca.ll
Dominik Steenken f24cf59d7a [SystemZ] Add is(LoadFrom|StoreTo)StackSlotPostFE to SystemZBackend (#132928) 
As part of an effort to enable instr-ref-based debug value tracking,
this PR implements `SystemZInstrInfo::isLoadFromStackSlotPostFE`, as
well as `SystemZInstrInfo::isStoreToStackSlotPostFE`. The implementation
relies upon the presence of MachineMemoryOperands on the relevant
`MachineInstr`s in order to access the `FrameIndex` post frame index
elimination.

Since these new functions are only meant to be called after frame-index
elimination, they assert against the present of a frame index on the
base register operand of the instruction.

Outside of the utility of these functions to enable instr-ref-based
debug value tracking, they also changes the behavior of the AsmPrinter,
since it will now be able to properly detect non-folded spills and
reloads, so this changes a number of tests that were checking
specifically for folded reloads.

Note that there are some tests that still check for `vst` and `vl` as
folded spills/reloads even though they should be straight reloads. This
will be addressed in a future PR.

Co-authored-by: Dominik Steenken <dominik.steenken@gmail.com>
2025-03-25 15:03:54 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; Test setjmp store to jmp_buf when frame pointer is used and saved
; because of variable size alloca.
; Frame Pointer is stored in slot 1.
; Return address in slot 2.
; Backchain value is stored in slot 3 for -mbackchain option.
; Stack Pointer in slot 4.
; Clobber %r6-%r15, %f8-%f15.
; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu | FileCheck %s
declare i32 @llvm.eh.sjlj.setjmp(ptr)
@buf = global [20 x ptr] zeroinitializer, align 8
define signext i32 @foo() "frame-pointer"="all" {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: stmg %r6, %r15, 48(%r15)
; CHECK-NEXT: .cfi_offset %r6, -112
; CHECK-NEXT: .cfi_offset %r7, -104
; CHECK-NEXT: .cfi_offset %r8, -96
; CHECK-NEXT: .cfi_offset %r9, -88
; CHECK-NEXT: .cfi_offset %r10, -80
; CHECK-NEXT: .cfi_offset %r11, -72
; CHECK-NEXT: .cfi_offset %r12, -64
; CHECK-NEXT: .cfi_offset %r13, -56
; CHECK-NEXT: .cfi_offset %r14, -48
; CHECK-NEXT: .cfi_offset %r15, -40
; CHECK-NEXT: aghi %r15, -240
; CHECK-NEXT: .cfi_def_cfa_offset 400
; CHECK-NEXT: lgr %r11, %r15
; CHECK-NEXT: .cfi_def_cfa_register %r11
; CHECK-NEXT: std %f8, 232(%r11) # 8-byte Spill
; CHECK-NEXT: std %f9, 224(%r11) # 8-byte Spill
; CHECK-NEXT: std %f10, 216(%r11) # 8-byte Spill
; CHECK-NEXT: std %f11, 208(%r11) # 8-byte Spill
; CHECK-NEXT: std %f12, 200(%r11) # 8-byte Spill
; CHECK-NEXT: std %f13, 192(%r11) # 8-byte Spill
; CHECK-NEXT: std %f14, 184(%r11) # 8-byte Spill
; CHECK-NEXT: std %f15, 176(%r11) # 8-byte Spill
; CHECK-NEXT: .cfi_offset %f8, -168
; CHECK-NEXT: .cfi_offset %f9, -176
; CHECK-NEXT: .cfi_offset %f10, -184
; CHECK-NEXT: .cfi_offset %f11, -192
; CHECK-NEXT: .cfi_offset %f12, -200
; CHECK-NEXT: .cfi_offset %f13, -208
; CHECK-NEXT: .cfi_offset %f14, -216
; CHECK-NEXT: .cfi_offset %f15, -224
; CHECK-NEXT: la %r0, 160(%r11)
; CHECK-NEXT: lgrl %r1, buf@GOT
; CHECK-NEXT: stg %r0, 168(%r11)
; CHECK-NEXT: mvhi 160(%r11), 10
; CHECK-NEXT: larl %r0, .LBB0_1
; CHECK-NEXT: stg %r0, 8(%r1)
; CHECK-NEXT: stg %r11, 0(%r1)
; CHECK-NEXT: stg %r15, 24(%r1)
; CHECK-NEXT: .LBB0_1: # Block address taken
; CHECK-NEXT: # %entry
; CHECK-NEXT: .LBB0_2: # %entry
; CHECK-NEXT: lg %r1, 168(%r11)
; CHECK-NEXT: lgf %r2, 0(%r1)
; CHECK-NEXT: ld %f8, 232(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f9, 224(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f10, 216(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f11, 208(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f12, 200(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f13, 192(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f14, 184(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f15, 176(%r11) # 8-byte Reload
; CHECK-NEXT: lmg %r6, %r15, 288(%r11)
; CHECK-NEXT: br %r14
entry:
%val = alloca ptr, align 8
%0 = alloca i8, i64 4, align 8
store ptr %0, ptr %val, align 8
%1 = load ptr, ptr %val, align 8
store volatile i32 10, ptr %1, align 4
%2 = call i32 @llvm.eh.sjlj.setjmp(ptr @buf)
%3 = load ptr, ptr %val, align 8
%4 = load volatile i32, ptr %3, align 4
ret i32 %4
}
define signext i32 @foo1() "backchain" "frame-pointer"="all" {
; CHECK-LABEL: foo1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: stmg %r6, %r15, 48(%r15)
; CHECK-NEXT: .cfi_offset %r6, -112
; CHECK-NEXT: .cfi_offset %r7, -104
; CHECK-NEXT: .cfi_offset %r8, -96
; CHECK-NEXT: .cfi_offset %r9, -88
; CHECK-NEXT: .cfi_offset %r10, -80
; CHECK-NEXT: .cfi_offset %r11, -72
; CHECK-NEXT: .cfi_offset %r12, -64
; CHECK-NEXT: .cfi_offset %r13, -56
; CHECK-NEXT: .cfi_offset %r14, -48
; CHECK-NEXT: .cfi_offset %r15, -40
; CHECK-NEXT: lgr %r1, %r15
; CHECK-NEXT: aghi %r15, -240
; CHECK-NEXT: .cfi_def_cfa_offset 400
; CHECK-NEXT: stg %r1, 0(%r15)
; CHECK-NEXT: lgr %r11, %r15
; CHECK-NEXT: .cfi_def_cfa_register %r11
; CHECK-NEXT: std %f8, 232(%r11) # 8-byte Spill
; CHECK-NEXT: std %f9, 224(%r11) # 8-byte Spill
; CHECK-NEXT: std %f10, 216(%r11) # 8-byte Spill
; CHECK-NEXT: std %f11, 208(%r11) # 8-byte Spill
; CHECK-NEXT: std %f12, 200(%r11) # 8-byte Spill
; CHECK-NEXT: std %f13, 192(%r11) # 8-byte Spill
; CHECK-NEXT: std %f14, 184(%r11) # 8-byte Spill
; CHECK-NEXT: std %f15, 176(%r11) # 8-byte Spill
; CHECK-NEXT: .cfi_offset %f8, -168
; CHECK-NEXT: .cfi_offset %f9, -176
; CHECK-NEXT: .cfi_offset %f10, -184
; CHECK-NEXT: .cfi_offset %f11, -192
; CHECK-NEXT: .cfi_offset %f12, -200
; CHECK-NEXT: .cfi_offset %f13, -208
; CHECK-NEXT: .cfi_offset %f14, -216
; CHECK-NEXT: .cfi_offset %f15, -224
; CHECK-NEXT: la %r0, 160(%r11)
; CHECK-NEXT: lgrl %r1, buf@GOT
; CHECK-NEXT: stg %r0, 168(%r11)
; CHECK-NEXT: mvhi 160(%r11), 10
; CHECK-NEXT: larl %r0, .LBB1_1
; CHECK-NEXT: stg %r0, 8(%r1)
; CHECK-NEXT: stg %r11, 0(%r1)
; CHECK-NEXT: stg %r15, 24(%r1)
; CHECK-NEXT: lg %r0, 0(%r15)
; CHECK-NEXT: stg %r0, 16(%r1)
; CHECK-NEXT: .LBB1_1: # Block address taken
; CHECK-NEXT: # %entry
; CHECK-NEXT: .LBB1_2: # %entry
; CHECK-NEXT: lg %r1, 168(%r11)
; CHECK-NEXT: lgf %r2, 0(%r1)
; CHECK-NEXT: ld %f8, 232(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f9, 224(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f10, 216(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f11, 208(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f12, 200(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f13, 192(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f14, 184(%r11) # 8-byte Reload
; CHECK-NEXT: ld %f15, 176(%r11) # 8-byte Reload
; CHECK-NEXT: lmg %r6, %r15, 288(%r11)
; CHECK-NEXT: br %r14
entry:
%val = alloca ptr, align 8
%0 = alloca i8, i64 4, align 8
store ptr %0, ptr %val, align 8
%1 = load ptr, ptr %val, align 8
store volatile i32 10, ptr %1, align 4
%2 = call i32 @llvm.eh.sjlj.setjmp(ptr @buf)
%3 = load ptr, ptr %val, align 8
%4 = load volatile i32, ptr %3, align 4
ret i32 %4
}
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