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llvm / llvm-project / llvm / d42433f828aa47533a213f63bfac32115a62fea2 / . / test / CodeGen / SystemZ / zos-prologue-epilog.ll
blob: ee816f4f6a79131a51caebfe7efaebf6960283ce [file] [log] [blame]
; Test the generated function prologs/epilogs under XPLINK64 on z/OS
;
; RUN: llc < %s -mtriple=s390x-ibm-zos -mcpu=z13 | FileCheck --check-prefixes=CHECK64,CHECK %s
; Test prolog/epilog for non-XPLEAF.
; Small stack frame.
; CHECK-LABEL: func0
; CHECK64: stmg 6, 7, 1872(4)
; stmg instruction's displacement field must be 2064-dsa_size
; as per ABI
; CHECK64: aghi 4, -192
; CHECK64: lg 7, 2072(4)
; CHECK64: aghi 4, 192
; CHECK64: b 2(7)
define void @func0() {
call i64 (i64) @fun(i64 10)
ret void
}
; Spill all GPR CSRs
; CHECK-LABEL: func1
; CHECK64: stmg 6, 15, 1904(4)
; CHECK64: aghi 4, -160
; CHECK64: lmg 7, 15, 2072(4)
; CHECK64: aghi 4, 160
; CHECK64: b 2(7)
define void @func1(i64 *%ptr) {
%l01 = load volatile i64, i64 *%ptr
%l02 = load volatile i64, i64 *%ptr
%l03 = load volatile i64, i64 *%ptr
%l04 = load volatile i64, i64 *%ptr
%l05 = load volatile i64, i64 *%ptr
%l06 = load volatile i64, i64 *%ptr
%l07 = load volatile i64, i64 *%ptr
%l08 = load volatile i64, i64 *%ptr
%l09 = load volatile i64, i64 *%ptr
%l10 = load volatile i64, i64 *%ptr
%l11 = load volatile i64, i64 *%ptr
%l12 = load volatile i64, i64 *%ptr
%l13 = load volatile i64, i64 *%ptr
%l14 = load volatile i64, i64 *%ptr
%l15 = load volatile i64, i64 *%ptr
%add01 = add i64 %l01, %l01
%add02 = add i64 %l02, %add01
%add03 = add i64 %l03, %add02
%add04 = add i64 %l04, %add03
%add05 = add i64 %l05, %add04
%add06 = add i64 %l06, %add05
%add07 = add i64 %l07, %add06
%add08 = add i64 %l08, %add07
%add09 = add i64 %l09, %add08
%add10 = add i64 %l10, %add09
%add11 = add i64 %l11, %add10
%add12 = add i64 %l12, %add11
%add13 = add i64 %l13, %add12
%add14 = add i64 %l14, %add13
%add15 = add i64 %l15, %add14
store volatile i64 %add01, i64 *%ptr
store volatile i64 %add02, i64 *%ptr
store volatile i64 %add03, i64 *%ptr
store volatile i64 %add04, i64 *%ptr
store volatile i64 %add05, i64 *%ptr
store volatile i64 %add06, i64 *%ptr
store volatile i64 %add07, i64 *%ptr
store volatile i64 %add08, i64 *%ptr
store volatile i64 %add09, i64 *%ptr
store volatile i64 %add10, i64 *%ptr
store volatile i64 %add11, i64 *%ptr
store volatile i64 %add12, i64 *%ptr
store volatile i64 %add13, i64 *%ptr
store volatile i64 %add14, i64 *%ptr
store volatile i64 %add15, i64 *%ptr
ret void
}
; Spill all FPRs and VRs
; CHECK-LABEL: func2
; CHECK64: stmg 6, 7, 1744(4)
; CHECK64: aghi 4, -320
; CHECK64: std 15, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 14, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 13, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 12, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 11, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 10, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 9, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: std 8, {{[0-9]+}}(4) * 8-byte Folded Spill
; CHECK64: vst 23, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 22, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 21, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 20, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 19, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 18, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 17, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: vst 16, {{[0-9]+}}(4), 4 * 16-byte Folded Spill
; CHECK64: ld 15, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 14, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 13, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 12, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 11, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 10, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 9, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: ld 8, {{[0-9]+}}(4) * 8-byte Folded Reload
; CHECK64: vl 23, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 22, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 21, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 20, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 19, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 18, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 17, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: vl 16, {{[0-9]+}}(4), 4 * 16-byte Folded Reload
; CHECK64: lg 7, 2072(4)
; CHECK64: aghi 4, 320
; CHECK64: b 2(7)
define void @func2(double *%ptr, <2 x i64> *%vec_ptr) {
%l00 = load volatile double, double *%ptr
%l01 = load volatile double, double *%ptr
%l02 = load volatile double, double *%ptr
%l03 = load volatile double, double *%ptr
%l04 = load volatile double, double *%ptr
%l05 = load volatile double, double *%ptr
%l06 = load volatile double, double *%ptr
%l07 = load volatile double, double *%ptr
%l08 = load volatile double, double *%ptr
%l09 = load volatile double, double *%ptr
%l10 = load volatile double, double *%ptr
%l11 = load volatile double, double *%ptr
%l12 = load volatile double, double *%ptr
%l13 = load volatile double, double *%ptr
%l14 = load volatile double, double *%ptr
%l15 = load volatile double, double *%ptr
%add00 = fadd double %l01, %l00
%add01 = fadd double %l01, %add00
%add02 = fadd double %l02, %add01
%add03 = fadd double %l03, %add02
%add04 = fadd double %l04, %add03
%add05 = fadd double %l05, %add04
%add06 = fadd double %l06, %add05
%add07 = fadd double %l07, %add06
%add08 = fadd double %l08, %add07
%add09 = fadd double %l09, %add08
%add10 = fadd double %l10, %add09
%add11 = fadd double %l11, %add10
%add12 = fadd double %l12, %add11
%add13 = fadd double %l13, %add12
%add14 = fadd double %l14, %add13
%add15 = fadd double %l15, %add14
store volatile double %add00, double *%ptr
store volatile double %add01, double *%ptr
store volatile double %add02, double *%ptr
store volatile double %add03, double *%ptr
store volatile double %add04, double *%ptr
store volatile double %add05, double *%ptr
store volatile double %add06, double *%ptr
store volatile double %add07, double *%ptr
store volatile double %add08, double *%ptr
store volatile double %add09, double *%ptr
store volatile double %add10, double *%ptr
store volatile double %add11, double *%ptr
store volatile double %add12, double *%ptr
store volatile double %add13, double *%ptr
store volatile double %add14, double *%ptr
store volatile double %add15, double *%ptr
%v00 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v01 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v02 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v03 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v04 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v05 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v06 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v07 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v08 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v09 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v10 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v11 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v12 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v13 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v14 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v15 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v16 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v17 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v18 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v19 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v20 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v21 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v22 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v23 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v24 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v25 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v26 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v27 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v28 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v29 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v30 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%v31 = load volatile <2 x i64>, <2 x i64> *%vec_ptr
%vadd00 = add <2 x i64> %v00, %v00
%vadd01 = add <2 x i64> %v01, %vadd00
%vadd02 = add <2 x i64> %v02, %vadd01
%vadd03 = add <2 x i64> %v03, %vadd02
%vadd04 = add <2 x i64> %v04, %vadd03
%vadd05 = add <2 x i64> %v05, %vadd04
%vadd06 = add <2 x i64> %v06, %vadd05
%vadd07 = add <2 x i64> %v07, %vadd06
%vadd08 = add <2 x i64> %v08, %vadd07
%vadd09 = add <2 x i64> %v09, %vadd08
%vadd10 = add <2 x i64> %v10, %vadd09
%vadd11 = add <2 x i64> %v11, %vadd10
%vadd12 = add <2 x i64> %v12, %vadd11
%vadd13 = add <2 x i64> %v13, %vadd12
%vadd14 = add <2 x i64> %v14, %vadd13
%vadd15 = add <2 x i64> %v15, %vadd14
%vadd16 = add <2 x i64> %v16, %vadd15
%vadd17 = add <2 x i64> %v17, %vadd16
%vadd18 = add <2 x i64> %v18, %vadd17
%vadd19 = add <2 x i64> %v19, %vadd18
%vadd20 = add <2 x i64> %v20, %vadd19
%vadd21 = add <2 x i64> %v21, %vadd20
%vadd22 = add <2 x i64> %v22, %vadd21
%vadd23 = add <2 x i64> %v23, %vadd22
%vadd24 = add <2 x i64> %v24, %vadd23
%vadd25 = add <2 x i64> %v25, %vadd24
%vadd26 = add <2 x i64> %v26, %vadd25
%vadd27 = add <2 x i64> %v27, %vadd26
%vadd28 = add <2 x i64> %v28, %vadd27
%vadd29 = add <2 x i64> %v29, %vadd28
%vadd30 = add <2 x i64> %v30, %vadd29
%vadd31 = add <2 x i64> %v31, %vadd30
store volatile <2 x i64> %vadd00, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd01, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd02, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd03, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd04, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd05, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd06, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd07, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd08, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd09, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd10, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd11, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd12, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd13, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd14, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd15, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd16, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd17, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd18, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd19, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd20, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd21, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd22, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd23, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd24, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd25, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd26, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd27, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd28, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd29, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd30, <2 x i64> *%vec_ptr
store volatile <2 x i64> %vadd31, <2 x i64> *%vec_ptr
ret void
}
; Big stack frame, force the use of agfi before stmg
; despite not requiring stack extension routine.
; CHECK64: agfi 4, -1040768
; CHECK64: stmg 6, 7, 2064(4)
; CHECK64: agfi 4, 1040768
define void @func3() {
%arr = alloca [130070 x i64], align 8
%ptr = bitcast [130070 x i64]* %arr to i8*
call i64 (i8*) @fun1(i8* %ptr)
ret void
}
; Requires the saving of r4 due to variable sized
; object in stack frame. (Eg: VLA) Sets up frame pointer in r8
; CHECK64: stmg 4, 9, 1856(4)
; CHECK64: aghi 4, -192
; CHECK64: lgr 8, 4
; TODO Will change to basr with ADA introduction.
; CHECK64: brasl 7, @@ALCAXP
; CHECK64-NEXT: bcr 0, 3
; CHECK64: lmg 4, 9, 2048(4)
define i64 @func4(i64 %n) {
%vla = alloca i64, i64 %n, align 8
%call = call i64 @fun2(i64 %n, i64* nonnull %vla, i64* nonnull %vla)
ret i64 %call
}
; Require saving of r4 and in addition, a displacement large enough
; to force use of agfi before stmg.
; CHECK64: lgr 0, 4
; CHECK64: agfi 4, -1040192
; CHECK64: stmg 4, 9, 2048(4)
; CHECK64: lgr 8, 4
; TODO Will change to basr with ADA introduction.
; CHECK64: brasl 7, @@ALCAXP
; CHECK64-NEXT: bcr 0, 3
;; CHECK64: lmg 4, 9, 2048(4)
define i64 @func5(i64 %n) {
%vla = alloca i64, i64 %n, align 8
%arr = alloca [130000 x i64], align 8
%ptr = bitcast [130000 x i64]* %arr to i64*
%call = call i64 @fun2(i64 %n, i64* nonnull %vla, i64* %ptr)
ret i64 %call
}
; CHECK-LABEL: large_stack
; CHECK64: agfi 4, -1048768
; CHECK64-NEXT: llgt 3, 1208
; CHECK64-NEXT: cg 4, 64(3)
; CHECK64-NEXT: jhe
; CHECK64: * %bb.1:
; CHECK64: lg 3, 72(3)
; CHECK64: basr 3, 3
; CHECK64: stmg 6, 7, 2064(4)
define void @large_stack() {
%arr = alloca [131072 x i64], align 8
%ptr = bitcast [131072 x i64]* %arr to i8*
call i64 (i8*) @fun1(i8* %ptr)
ret void
}
; CHECK-LABEL: leaf_func
; CHECK-NOT: aghi 4,
; CHECK-NOT: stmg
; CHECK: agr 1, 2
; CHECK: msgr 1, 3
; CHECK: aghik 3, 1, -4
; CHECK-NOT: aghi 4,
; CHECK-NOT: lmg
define i64 @leaf_func0(i64 %a, i64 %b, i64 %c) {
%n = add i64 %a, %b
%m = mul i64 %n, %c
%o = sub i64 %m, 4
ret i64 %o
}
declare i64 @fun(i64 %arg0)
declare i64 @fun1(i8* %ptr)
declare i64 @fun2(i64 %n, i64* %arr0, i64* %arr1)