; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
; Test subtraction of a zero-extended i32 from an i64.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare i64 @foo()
; Check SLGFR.
define zeroext i1 @f1(i64 %dummy, i64 %a, i32 %b, ptr %res) {
; CHECK-LABEL: f1:
; CHECK: # %bb.0:
; CHECK-NEXT: slgfr %r3, %r4
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check using the overflow result for a branch.
define void @f2(i64 %dummy, i64 %a, i32 %b, ptr %res) {
; CHECK-LABEL: f2:
; CHECK: # %bb.0:
; CHECK-NEXT: slgfr %r3, %r4
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: jgle foo@PLT
; CHECK-NEXT: .LBB1_1: # %exit
; CHECK-NEXT: br %r14
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
br i1 %obit, label %call, label %exit
call:
tail call i64 @foo()
br label %exit
exit:
ret void
}
; ... and the same with the inverted direction.
define void @f3(i64 %dummy, i64 %a, i32 %b, ptr %res) {
; CHECK-LABEL: f3:
; CHECK: # %bb.0:
; CHECK-NEXT: slgfr %r3, %r4
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: jgnle foo@PLT
; CHECK-NEXT: .LBB2_1: # %exit
; CHECK-NEXT: br %r14
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
br i1 %obit, label %exit, label %call
call:
tail call i64 @foo()
br label %exit
exit:
ret void
}
; Check SLGF with no displacement.
define zeroext i1 @f4(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f4:
; CHECK: # %bb.0:
; CHECK-NEXT: slgf %r3, 0(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%b = load i32, ptr %src
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check the high end of the aligned SLGF range.
define zeroext i1 @f5(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f5:
; CHECK: # %bb.0:
; CHECK-NEXT: slgf %r3, 524284(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%ptr = getelementptr i32, ptr %src, i64 131071
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check the next doubleword up, which needs separate address logic.
; Other sequences besides this one would be OK.
define zeroext i1 @f6(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f6:
; CHECK: # %bb.0:
; CHECK-NEXT: agfi %r4, 524288
; CHECK-NEXT: slgf %r3, 0(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%ptr = getelementptr i32, ptr %src, i64 131072
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check the high end of the negative aligned SLGF range.
define zeroext i1 @f7(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f7:
; CHECK: # %bb.0:
; CHECK-NEXT: slgf %r3, -4(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%ptr = getelementptr i32, ptr %src, i64 -1
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check the low end of the SLGF range.
define zeroext i1 @f8(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f8:
; CHECK: # %bb.0:
; CHECK-NEXT: slgf %r3, -524288(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%ptr = getelementptr i32, ptr %src, i64 -131072
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check the next doubleword down, which needs separate address logic.
; Other sequences besides this one would be OK.
define zeroext i1 @f9(i64 %dummy, i64 %a, ptr %src, ptr %res) {
; CHECK-LABEL: f9:
; CHECK: # %bb.0:
; CHECK-NEXT: agfi %r4, -524292
; CHECK-NEXT: slgf %r3, 0(%r4)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r3, 0(%r5)
; CHECK-NEXT: br %r14
%ptr = getelementptr i32, ptr %src, i64 -131073
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check that SLGF allows an index.
define zeroext i1 @f10(i64 %src, i64 %index, i64 %a, ptr %res) {
; CHECK-LABEL: f10:
; CHECK: # %bb.0:
; CHECK-NEXT: slgf %r4, 524284(%r3,%r2)
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 33
; CHECK-NEXT: stg %r4, 0(%r5)
; CHECK-NEXT: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 524284
%ptr = inttoptr i64 %add2 to ptr
%b = load i32, ptr %ptr
%bext = zext i32 %b to i64
%t = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %a, i64 %bext)
%val = extractvalue {i64, i1} %t, 0
%obit = extractvalue {i64, i1} %t, 1
store i64 %val, ptr %res
ret i1 %obit
}
; Check that subtractions of spilled values can use SLGF rather than SLGFR.
define zeroext i1 @f11(ptr %ptr0) {
; CHECK-LABEL: f11:
; CHECK: # %bb.0:
; 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, -168
; CHECK-NEXT: .cfi_def_cfa_offset 328
; CHECK-NEXT: lhi %r0, 100
; CHECK-NEXT: lhi %r12, 100
; CHECK-NEXT: a %r12, 0(%r2)
; CHECK-NEXT: lhi %r13, 100
; CHECK-NEXT: a %r13, 8(%r2)
; CHECK-NEXT: lhi %r6, 100
; CHECK-NEXT: a %r6, 16(%r2)
; CHECK-NEXT: lhi %r7, 100
; CHECK-NEXT: a %r7, 24(%r2)
; CHECK-NEXT: lhi %r8, 100
; CHECK-NEXT: a %r8, 32(%r2)
; CHECK-NEXT: lhi %r9, 100
; CHECK-NEXT: a %r9, 40(%r2)
; CHECK-NEXT: lhi %r10, 100
; CHECK-NEXT: a %r10, 48(%r2)
; CHECK-NEXT: lhi %r11, 100
; CHECK-NEXT: a %r11, 56(%r2)
; CHECK-NEXT: lhi %r1, 100
; CHECK-NEXT: a %r1, 64(%r2)
; CHECK-NEXT: st %r1, 160(%r15) # 4-byte Folded Spill
; CHECK-NEXT: a %r0, 72(%r2)
; CHECK-NEXT: st %r0, 164(%r15) # 4-byte Folded Spill
; CHECK-NEXT: st %r12, 0(%r2)
; CHECK-NEXT: st %r13, 8(%r2)
; CHECK-NEXT: st %r6, 16(%r2)
; CHECK-NEXT: st %r7, 24(%r2)
; CHECK-NEXT: st %r8, 32(%r2)
; CHECK-NEXT: st %r9, 40(%r2)
; CHECK-NEXT: st %r10, 48(%r2)
; CHECK-NEXT: st %r11, 56(%r2)
; CHECK-NEXT: st %r1, 64(%r2)
; CHECK-NEXT: st %r0, 72(%r2)
; CHECK-NEXT: brasl %r14, foo@PLT
; CHECK-NEXT: slgfr %r2, %r12
; CHECK-NEXT: ipm %r0
; CHECK-NEXT: afi %r0, -536870912
; CHECK-NEXT: srl %r0, 31
; CHECK-NEXT: slgfr %r2, %r13
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r6
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r7
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r8
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r9
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r10
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgfr %r2, %r11
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgf %r2, 160(%r15) # 4-byte Folded Reload
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: slgf %r2, 164(%r15) # 4-byte Folded Reload
; CHECK-NEXT: ipm %r1
; CHECK-NEXT: afi %r1, -536870912
; CHECK-NEXT: rosbg %r0, %r1, 63, 63, 33
; CHECK-NEXT: risbg %r2, %r0, 63, 191, 0
; CHECK-NEXT: lmg %r6, %r15, 216(%r15)
; CHECK-NEXT: br %r14
%ptr1 = getelementptr i32, ptr %ptr0, i64 2
%ptr2 = getelementptr i32, ptr %ptr0, i64 4
%ptr3 = getelementptr i32, ptr %ptr0, i64 6
%ptr4 = getelementptr i32, ptr %ptr0, i64 8
%ptr5 = getelementptr i32, ptr %ptr0, i64 10
%ptr6 = getelementptr i32, ptr %ptr0, i64 12
%ptr7 = getelementptr i32, ptr %ptr0, i64 14
%ptr8 = getelementptr i32, ptr %ptr0, i64 16
%ptr9 = getelementptr i32, ptr %ptr0, i64 18
%val0 = load i32, ptr %ptr0
%val1 = load i32, ptr %ptr1
%val2 = load i32, ptr %ptr2
%val3 = load i32, ptr %ptr3
%val4 = load i32, ptr %ptr4
%val5 = load i32, ptr %ptr5
%val6 = load i32, ptr %ptr6
%val7 = load i32, ptr %ptr7
%val8 = load i32, ptr %ptr8
%val9 = load i32, ptr %ptr9
%frob0 = add i32 %val0, 100
%frob1 = add i32 %val1, 100
%frob2 = add i32 %val2, 100
%frob3 = add i32 %val3, 100
%frob4 = add i32 %val4, 100
%frob5 = add i32 %val5, 100
%frob6 = add i32 %val6, 100
%frob7 = add i32 %val7, 100
%frob8 = add i32 %val8, 100
%frob9 = add i32 %val9, 100
store i32 %frob0, ptr %ptr0
store i32 %frob1, ptr %ptr1
store i32 %frob2, ptr %ptr2
store i32 %frob3, ptr %ptr3
store i32 %frob4, ptr %ptr4
store i32 %frob5, ptr %ptr5
store i32 %frob6, ptr %ptr6
store i32 %frob7, ptr %ptr7
store i32 %frob8, ptr %ptr8
store i32 %frob9, ptr %ptr9
%ret = call i64 @foo()
%ext0 = zext i32 %frob0 to i64
%ext1 = zext i32 %frob1 to i64
%ext2 = zext i32 %frob2 to i64
%ext3 = zext i32 %frob3 to i64
%ext4 = zext i32 %frob4 to i64
%ext5 = zext i32 %frob5 to i64
%ext6 = zext i32 %frob6 to i64
%ext7 = zext i32 %frob7 to i64
%ext8 = zext i32 %frob8 to i64
%ext9 = zext i32 %frob9 to i64
%t0 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %ret, i64 %ext0)
%add0 = extractvalue {i64, i1} %t0, 0
%obit0 = extractvalue {i64, i1} %t0, 1
%t1 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add0, i64 %ext1)
%add1 = extractvalue {i64, i1} %t1, 0
%obit1 = extractvalue {i64, i1} %t1, 1
%res1 = or i1 %obit0, %obit1
%t2 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add1, i64 %ext2)
%add2 = extractvalue {i64, i1} %t2, 0
%obit2 = extractvalue {i64, i1} %t2, 1
%res2 = or i1 %res1, %obit2
%t3 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add2, i64 %ext3)
%add3 = extractvalue {i64, i1} %t3, 0
%obit3 = extractvalue {i64, i1} %t3, 1
%res3 = or i1 %res2, %obit3
%t4 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add3, i64 %ext4)
%add4 = extractvalue {i64, i1} %t4, 0
%obit4 = extractvalue {i64, i1} %t4, 1
%res4 = or i1 %res3, %obit4
%t5 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add4, i64 %ext5)
%add5 = extractvalue {i64, i1} %t5, 0
%obit5 = extractvalue {i64, i1} %t5, 1
%res5 = or i1 %res4, %obit5
%t6 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add5, i64 %ext6)
%add6 = extractvalue {i64, i1} %t6, 0
%obit6 = extractvalue {i64, i1} %t6, 1
%res6 = or i1 %res5, %obit6
%t7 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add6, i64 %ext7)
%add7 = extractvalue {i64, i1} %t7, 0
%obit7 = extractvalue {i64, i1} %t7, 1
%res7 = or i1 %res6, %obit7
%t8 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add7, i64 %ext8)
%add8 = extractvalue {i64, i1} %t8, 0
%obit8 = extractvalue {i64, i1} %t8, 1
%res8 = or i1 %res7, %obit8
%t9 = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %add8, i64 %ext9)
%add9 = extractvalue {i64, i1} %t9, 0
%obit9 = extractvalue {i64, i1} %t9, 1
%res9 = or i1 %res8, %obit9
ret i1 %res9
}
declare {i64, i1} @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone
Codebase Browser
llvm