forked from OSchip/llvm-project
203 lines
5.1 KiB
LLVM
203 lines
5.1 KiB
LLVM
; Testg 64-bit signed division and remainder.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i64 @foo()
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; Testg register division. The result is in the second of the two registers.
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define void @f1(i64 %dummy, i64 %a, i64 %b, i64 *%dest) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsgr %r2, %r4
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; CHECK: stg %r3, 0(%r5)
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; CHECK: br %r14
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%div = sdiv i64 %a, %b
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store i64 %div, i64 *%dest
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ret void
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}
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; Testg register remainder. The result is in the first of the two registers.
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define void @f2(i64 %dummy, i64 %a, i64 %b, i64 *%dest) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsgr %r2, %r4
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; CHECK: stg %r2, 0(%r5)
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; CHECK: br %r14
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%rem = srem i64 %a, %b
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store i64 %rem, i64 *%dest
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ret void
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}
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; Testg that division and remainder use a single instruction.
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define i64 @f3(i64 %dummy1, i64 %a, i64 %b) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsgr %r2, %r4
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; CHECK-NOT: dsgr
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; CHECK: ogr %r2, %r3
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; CHECK: br %r14
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%div = sdiv i64 %a, %b
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%rem = srem i64 %a, %b
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%or = or i64 %rem, %div
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ret i64 %or
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}
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; Testg memory division with no displacement.
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define void @f4(i64 %dummy, i64 %a, i64 *%src, i64 *%dest) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsg %r2, 0(%r4)
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; CHECK: stg %r3, 0(%r5)
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; CHECK: br %r14
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%b = load i64 *%src
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%div = sdiv i64 %a, %b
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store i64 %div, i64 *%dest
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ret void
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}
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; Testg memory remainder with no displacement.
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define void @f5(i64 %dummy, i64 %a, i64 *%src, i64 *%dest) {
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; CHECK-LABEL: f5:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsg %r2, 0(%r4)
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; CHECK: stg %r2, 0(%r5)
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; CHECK: br %r14
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%b = load i64 *%src
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%rem = srem i64 %a, %b
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store i64 %rem, i64 *%dest
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ret void
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}
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; Testg both memory division and memory remainder.
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define i64 @f6(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: dsg %r2, 0(%r4)
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; CHECK-NOT: {{dsg|dsgr}}
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; CHECK: ogr %r2, %r3
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; CHECK: br %r14
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%b = load i64 *%src
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%div = sdiv i64 %a, %b
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%rem = srem i64 %a, %b
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%or = or i64 %rem, %div
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ret i64 %or
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}
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; Check the high end of the DSG range.
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define i64 @f7(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f7:
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; CHECK: dsg %r2, 524280(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64 *%src, i64 65535
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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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 @f8(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f8:
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; CHECK: agfi %r4, 524288
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; CHECK: dsg %r2, 0(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64 *%src, i64 65536
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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}
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; Check the high end of the negative aligned DSG range.
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define i64 @f9(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f9:
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; CHECK: dsg %r2, -8(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64 *%src, i64 -1
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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}
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; Check the low end of the DSG range.
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define i64 @f10(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f10:
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; CHECK: dsg %r2, -524288(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64 *%src, i64 -65536
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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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 @f11(i64 %dummy, i64 %a, i64 *%src) {
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; CHECK-LABEL: f11:
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; CHECK: agfi %r4, -524296
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; CHECK: dsg %r2, 0(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64 *%src, i64 -65537
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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}
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; Check that DSG allows an index.
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define i64 @f12(i64 %dummy, i64 %a, i64 %src, i64 %index) {
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; CHECK-LABEL: f12:
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; CHECK: dsg %r2, 524287(%r5,%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, 524287
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%ptr = inttoptr i64 %add2 to i64 *
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%b = load i64 *%ptr
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%rem = srem i64 %a, %b
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ret i64 %rem
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}
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; Check that divisions of spilled values can use DSG rather than DSGR.
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define i64 @f13(i64 *%ptr0) {
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; CHECK-LABEL: f13:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: dsg {{%r[0-9]+}}, 160(%r15)
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; CHECK: br %r14
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%ptr1 = getelementptr i64 *%ptr0, i64 2
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%ptr2 = getelementptr i64 *%ptr0, i64 4
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%ptr3 = getelementptr i64 *%ptr0, i64 6
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%ptr4 = getelementptr i64 *%ptr0, i64 8
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%ptr5 = getelementptr i64 *%ptr0, i64 10
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%ptr6 = getelementptr i64 *%ptr0, i64 12
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%ptr7 = getelementptr i64 *%ptr0, i64 14
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%ptr8 = getelementptr i64 *%ptr0, i64 16
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%ptr9 = getelementptr i64 *%ptr0, i64 18
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%ptr10 = getelementptr i64 *%ptr0, i64 20
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%val0 = load i64 *%ptr0
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%val1 = load i64 *%ptr1
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%val2 = load i64 *%ptr2
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%val3 = load i64 *%ptr3
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%val4 = load i64 *%ptr4
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%val5 = load i64 *%ptr5
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%val6 = load i64 *%ptr6
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%val7 = load i64 *%ptr7
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%val8 = load i64 *%ptr8
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%val9 = load i64 *%ptr9
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%val10 = load i64 *%ptr10
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%ret = call i64 @foo()
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%div0 = sdiv i64 %ret, %val0
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%div1 = sdiv i64 %div0, %val1
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%div2 = sdiv i64 %div1, %val2
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%div3 = sdiv i64 %div2, %val3
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%div4 = sdiv i64 %div3, %val4
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%div5 = sdiv i64 %div4, %val5
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%div6 = sdiv i64 %div5, %val6
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%div7 = sdiv i64 %div6, %val7
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%div8 = sdiv i64 %div7, %val8
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%div9 = sdiv i64 %div8, %val9
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%div10 = sdiv i64 %div9, %val10
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ret i64 %div10
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}
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