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122 lines
3.6 KiB
LLVM
122 lines
3.6 KiB
LLVM
; Test 64-bit floating-point division.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
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; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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declare double @foo()
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; Check register division.
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define double @f1(double %f1, double %f2) {
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; CHECK-LABEL: f1:
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; CHECK: ddbr %f0, %f2
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; CHECK: br %r14
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%res = fdiv double %f1, %f2
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ret double %res
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}
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; Check the low end of the DDB range.
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define double @f2(double %f1, double *%ptr) {
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; CHECK-LABEL: f2:
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; CHECK: ddb %f0, 0(%r2)
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; CHECK: br %r14
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%f2 = load double, double *%ptr
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%res = fdiv double %f1, %f2
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ret double %res
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}
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; Check the high end of the aligned DDB range.
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define double @f3(double %f1, double *%base) {
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; CHECK-LABEL: f3:
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; CHECK: ddb %f0, 4088(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 511
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%f2 = load double, double *%ptr
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%res = fdiv double %f1, %f2
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ret double %res
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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 double @f4(double %f1, double *%base) {
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; CHECK-LABEL: f4:
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; CHECK: aghi %r2, 4096
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; CHECK: ddb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 512
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%f2 = load double, double *%ptr
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%res = fdiv double %f1, %f2
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ret double %res
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}
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; Check negative displacements, which also need separate address logic.
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define double @f5(double %f1, double *%base) {
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; CHECK-LABEL: f5:
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; CHECK: aghi %r2, -8
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; CHECK: ddb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 -1
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%f2 = load double, double *%ptr
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%res = fdiv double %f1, %f2
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ret double %res
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}
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; Check that DDB allows indices.
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define double @f6(double %f1, double *%base, i64 %index) {
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; CHECK-LABEL: f6:
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; CHECK: sllg %r1, %r3, 3
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; CHECK: ddb %f0, 800(%r1,%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr double, double *%base, i64 %index
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%ptr2 = getelementptr double, double *%ptr1, i64 100
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%f2 = load double, double *%ptr2
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%res = fdiv double %f1, %f2
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ret double %res
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}
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; Check that divisions of spilled values can use DDB rather than DDBR.
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define double @f7(double *%ptr0) {
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; CHECK-LABEL: f7:
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; CHECK: brasl %r14, foo@PLT
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; CHECK-SCALAR: ddb %f0, 160(%r15)
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; CHECK: br %r14
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%ptr1 = getelementptr double, double *%ptr0, i64 2
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%ptr2 = getelementptr double, double *%ptr0, i64 4
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%ptr3 = getelementptr double, double *%ptr0, i64 6
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%ptr4 = getelementptr double, double *%ptr0, i64 8
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%ptr5 = getelementptr double, double *%ptr0, i64 10
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%ptr6 = getelementptr double, double *%ptr0, i64 12
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%ptr7 = getelementptr double, double *%ptr0, i64 14
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%ptr8 = getelementptr double, double *%ptr0, i64 16
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%ptr9 = getelementptr double, double *%ptr0, i64 18
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%ptr10 = getelementptr double, double *%ptr0, i64 20
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%val0 = load double, double *%ptr0
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%val1 = load double, double *%ptr1
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%val2 = load double, double *%ptr2
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%val3 = load double, double *%ptr3
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%val4 = load double, double *%ptr4
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%val5 = load double, double *%ptr5
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%val6 = load double, double *%ptr6
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%val7 = load double, double *%ptr7
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%val8 = load double, double *%ptr8
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%val9 = load double, double *%ptr9
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%val10 = load double, double *%ptr10
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%ret = call double @foo()
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%div0 = fdiv double %ret, %val0
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%div1 = fdiv double %div0, %val1
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%div2 = fdiv double %div1, %val2
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%div3 = fdiv double %div2, %val3
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%div4 = fdiv double %div3, %val4
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%div5 = fdiv double %div4, %val5
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%div6 = fdiv double %div5, %val6
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%div7 = fdiv double %div6, %val7
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%div8 = fdiv double %div7, %val8
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%div9 = fdiv double %div8, %val9
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%div10 = fdiv double %div9, %val10
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ret double %div10
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}
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