a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
122 lines
3.4 KiB
LLVM
122 lines
3.4 KiB
LLVM
; Test 32-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=z14 | FileCheck %s
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declare float @foo()
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; Check register division.
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define float @f1(float %f1, float %f2) {
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; CHECK-LABEL: f1:
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; CHECK: debr %f0, %f2
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; CHECK: br %r14
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check the low end of the DEB range.
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define float @f2(float %f1, ptr %ptr) {
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; CHECK-LABEL: f2:
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; CHECK: deb %f0, 0(%r2)
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; CHECK: br %r14
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%f2 = load float, ptr %ptr
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check the high end of the aligned DEB range.
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define float @f3(float %f1, ptr %base) {
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; CHECK-LABEL: f3:
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; CHECK: deb %f0, 4092(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, ptr %base, i64 1023
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%f2 = load float, ptr %ptr
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define float @f4(float %f1, ptr %base) {
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; CHECK-LABEL: f4:
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; CHECK: aghi %r2, 4096
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; CHECK: deb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, ptr %base, i64 1024
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%f2 = load float, ptr %ptr
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check negative displacements, which also need separate address logic.
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define float @f5(float %f1, ptr %base) {
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; CHECK-LABEL: f5:
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; CHECK: aghi %r2, -4
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; CHECK: deb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float, ptr %base, i64 -1
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%f2 = load float, ptr %ptr
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check that DEB allows indices.
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define float @f6(float %f1, ptr %base, i64 %index) {
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; CHECK-LABEL: f6:
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; CHECK: sllg %r1, %r3, 2
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; CHECK: deb %f0, 400(%r1,%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr float, ptr %base, i64 %index
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%ptr2 = getelementptr float, ptr %ptr1, i64 100
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%f2 = load float, ptr %ptr2
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%res = fdiv float %f1, %f2
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ret float %res
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}
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; Check that divisions of spilled values can use DEB rather than DEBR.
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define float @f7(ptr %ptr0) {
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; CHECK-LABEL: f7:
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; CHECK: brasl %r14, foo@PLT
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; CHECK-SCALAR: deb %f0, 16{{[04]}}(%r15)
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; CHECK: br %r14
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%ptr1 = getelementptr float, ptr %ptr0, i64 2
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%ptr2 = getelementptr float, ptr %ptr0, i64 4
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%ptr3 = getelementptr float, ptr %ptr0, i64 6
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%ptr4 = getelementptr float, ptr %ptr0, i64 8
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%ptr5 = getelementptr float, ptr %ptr0, i64 10
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%ptr6 = getelementptr float, ptr %ptr0, i64 12
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%ptr7 = getelementptr float, ptr %ptr0, i64 14
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%ptr8 = getelementptr float, ptr %ptr0, i64 16
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%ptr9 = getelementptr float, ptr %ptr0, i64 18
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%ptr10 = getelementptr float, ptr %ptr0, i64 20
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%val0 = load float, ptr %ptr0
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%val1 = load float, ptr %ptr1
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%val2 = load float, ptr %ptr2
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%val3 = load float, ptr %ptr3
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%val4 = load float, ptr %ptr4
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%val5 = load float, ptr %ptr5
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%val6 = load float, ptr %ptr6
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%val7 = load float, ptr %ptr7
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%val8 = load float, ptr %ptr8
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%val9 = load float, ptr %ptr9
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%val10 = load float, ptr %ptr10
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%ret = call float @foo()
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%div0 = fdiv float %ret, %val0
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%div1 = fdiv float %div0, %val1
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%div2 = fdiv float %div1, %val2
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%div3 = fdiv float %div2, %val3
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%div4 = fdiv float %div3, %val4
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%div5 = fdiv float %div4, %val5
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%div6 = fdiv float %div5, %val6
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%div7 = fdiv float %div6, %val7
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%div8 = fdiv float %div7, %val8
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%div9 = fdiv float %div8, %val9
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%div10 = fdiv float %div9, %val10
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ret float %div10
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}
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