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|
; Test 32-bit multiplication in which the second operand is variable.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare i32 @foo()
; Check MSR.
define i32 @f1(i32 %a, i32 %b) {
; CHECK-LABEL: f1:
; CHECK: msr %r2, %r3
; CHECK: br %r14
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the low end of the MS range.
define i32 @f2(i32 %a, ptr %src) {
; CHECK-LABEL: f2:
; CHECK: ms %r2, 0(%r3)
; CHECK: br %r14
%b = load i32, ptr %src
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the high end of the aligned MS range.
define i32 @f3(i32 %a, ptr %src) {
; CHECK-LABEL: f3:
; CHECK: ms %r2, 4092(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 1023
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the next word up, which should use MSY instead of MS.
define i32 @f4(i32 %a, ptr %src) {
; CHECK-LABEL: f4:
; CHECK: msy %r2, 4096(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 1024
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the high end of the aligned MSY range.
define i32 @f5(i32 %a, ptr %src) {
; CHECK-LABEL: f5:
; CHECK: msy %r2, 524284(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 131071
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f6(i32 %a, ptr %src) {
; CHECK-LABEL: f6:
; CHECK: agfi %r3, 524288
; CHECK: ms %r2, 0(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 131072
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the high end of the negative aligned MSY range.
define i32 @f7(i32 %a, ptr %src) {
; CHECK-LABEL: f7:
; CHECK: msy %r2, -4(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 -1
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the low end of the MSY range.
define i32 @f8(i32 %a, ptr %src) {
; CHECK-LABEL: f8:
; CHECK: msy %r2, -524288(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 -131072
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check the next word down, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f9(i32 %a, ptr %src) {
; CHECK-LABEL: f9:
; CHECK: agfi %r3, -524292
; CHECK: ms %r2, 0(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, ptr %src, i64 -131073
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check that MS allows an index.
define i32 @f10(i32 %a, i64 %src, i64 %index) {
; CHECK-LABEL: f10:
; CHECK: ms %r2, 4092({{%r4,%r3|%r3,%r4}})
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4092
%ptr = inttoptr i64 %add2 to ptr
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check that MSY allows an index.
define i32 @f11(i32 %a, i64 %src, i64 %index) {
; CHECK-LABEL: f11:
; CHECK: msy %r2, 4096({{%r4,%r3|%r3,%r4}})
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 4096
%ptr = inttoptr i64 %add2 to ptr
%b = load i32, ptr %ptr
%mul = mul i32 %a, %b
ret i32 %mul
}
; Check that multiplications of spilled values can use MS rather than MSR.
define i32 @f12(ptr %ptr0) {
; CHECK-LABEL: f12:
; CHECK: brasl %r14, foo@PLT
; CHECK: ms %r2, 16{{[04]}}(%r15)
; CHECK: 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
%ret = call i32 @foo()
%mul0 = mul i32 %ret, %val0
%mul1 = mul i32 %mul0, %val1
%mul2 = mul i32 %mul1, %val2
%mul3 = mul i32 %mul2, %val3
%mul4 = mul i32 %mul3, %val4
%mul5 = mul i32 %mul4, %val5
%mul6 = mul i32 %mul5, %val6
%mul7 = mul i32 %mul6, %val7
%mul8 = mul i32 %mul7, %val8
%mul9 = mul i32 %mul8, %val9
ret i32 %mul9
}
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