forked from OSchip/llvm-project
141 lines
3.6 KiB
LLVM
141 lines
3.6 KiB
LLVM
; Test 64-bit subtraction in which the second operand is variable.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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declare i64 @foo()
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; Check SGR.
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define i64 @f1(i64 %a, i64 %b) {
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; CHECK-LABEL: f1:
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; CHECK: sgr %r2, %r3
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; CHECK: br %r14
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check SG with no displacement.
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define i64 @f2(i64 %a, i64 *%src) {
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; CHECK-LABEL: f2:
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; CHECK: sg %r2, 0(%r3)
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; CHECK: br %r14
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%b = load i64, i64 *%src
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check the high end of the aligned SG range.
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define i64 @f3(i64 %a, i64 *%src) {
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; CHECK-LABEL: f3:
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; CHECK: sg %r2, 524280(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, i64 *%src, i64 65535
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check the next doubleword up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define i64 @f4(i64 %a, i64 *%src) {
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; CHECK-LABEL: f4:
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; CHECK: agfi %r3, 524288
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; CHECK: sg %r2, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, i64 *%src, i64 65536
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check the high end of the negative aligned SG range.
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define i64 @f5(i64 %a, i64 *%src) {
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; CHECK-LABEL: f5:
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; CHECK: sg %r2, -8(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, i64 *%src, i64 -1
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check the low end of the SG range.
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define i64 @f6(i64 %a, i64 *%src) {
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; CHECK-LABEL: f6:
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; CHECK: sg %r2, -524288(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, i64 *%src, i64 -65536
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check the next doubleword down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define i64 @f7(i64 %a, i64 *%src) {
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; CHECK-LABEL: f7:
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; CHECK: agfi %r3, -524296
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; CHECK: sg %r2, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, i64 *%src, i64 -65537
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check that SG allows an index.
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define i64 @f8(i64 %a, i64 %src, i64 %index) {
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; CHECK-LABEL: f8:
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; CHECK: sg %r2, 524280({{%r4,%r3|%r3,%r4}})
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; CHECK: br %r14
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%add1 = add i64 %src, %index
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%add2 = add i64 %add1, 524280
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%ptr = inttoptr i64 %add2 to i64 *
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%b = load i64, i64 *%ptr
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%sub = sub i64 %a, %b
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ret i64 %sub
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}
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; Check that subtractions of spilled values can use SG rather than SGR.
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define i64 @f9(i64 *%ptr0) {
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; CHECK-LABEL: f9:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: sg %r2, 160(%r15)
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; CHECK: br %r14
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%ptr1 = getelementptr i64, i64 *%ptr0, i64 2
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%ptr2 = getelementptr i64, i64 *%ptr0, i64 4
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%ptr3 = getelementptr i64, i64 *%ptr0, i64 6
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%ptr4 = getelementptr i64, i64 *%ptr0, i64 8
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%ptr5 = getelementptr i64, i64 *%ptr0, i64 10
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%ptr6 = getelementptr i64, i64 *%ptr0, i64 12
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%ptr7 = getelementptr i64, i64 *%ptr0, i64 14
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%ptr8 = getelementptr i64, i64 *%ptr0, i64 16
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%ptr9 = getelementptr i64, i64 *%ptr0, i64 18
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%val0 = load i64, i64 *%ptr0
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%val1 = load i64, i64 *%ptr1
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%val2 = load i64, i64 *%ptr2
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%val3 = load i64, i64 *%ptr3
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%val4 = load i64, i64 *%ptr4
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%val5 = load i64, i64 *%ptr5
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%val6 = load i64, i64 *%ptr6
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%val7 = load i64, i64 *%ptr7
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%val8 = load i64, i64 *%ptr8
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%val9 = load i64, i64 *%ptr9
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%ret = call i64 @foo()
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%sub0 = sub i64 %ret, %val0
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%sub1 = sub i64 %sub0, %val1
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%sub2 = sub i64 %sub1, %val2
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%sub3 = sub i64 %sub2, %val3
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%sub4 = sub i64 %sub3, %val4
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%sub5 = sub i64 %sub4, %val5
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%sub6 = sub i64 %sub5, %val6
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%sub7 = sub i64 %sub6, %val7
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%sub8 = sub i64 %sub7, %val8
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%sub9 = sub i64 %sub8, %val9
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ret i64 %sub9
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}
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