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.
160 lines
3.4 KiB
LLVM
160 lines
3.4 KiB
LLVM
; Test 32-bit multiplication in which the second operand is constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check multiplication by 2, which should use shifts.
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define i32 @f1(i32 %a, ptr %dest) {
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; CHECK-LABEL: f1:
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; CHECK: sll %r2, 1
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; CHECK: br %r14
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%mul = mul i32 %a, 2
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ret i32 %mul
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}
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; Check multiplication by 3.
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define i32 @f2(i32 %a, ptr %dest) {
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; CHECK-LABEL: f2:
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; CHECK: mhi %r2, 3
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; CHECK: br %r14
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%mul = mul i32 %a, 3
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ret i32 %mul
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}
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; Check the high end of the MHI range.
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define i32 @f3(i32 %a, ptr %dest) {
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; CHECK-LABEL: f3:
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; CHECK: mhi %r2, 32767
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; CHECK: br %r14
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%mul = mul i32 %a, 32767
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ret i32 %mul
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}
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; Check the next value up, which should use shifts.
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define i32 @f4(i32 %a, ptr %dest) {
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; CHECK-LABEL: f4:
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; CHECK: sll %r2, 15
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; CHECK: br %r14
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%mul = mul i32 %a, 32768
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ret i32 %mul
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}
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; Check the next value up again, which can use MSFI.
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define i32 @f5(i32 %a, ptr %dest) {
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; CHECK-LABEL: f5:
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; CHECK: msfi %r2, 32769
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; CHECK: br %r14
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%mul = mul i32 %a, 32769
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ret i32 %mul
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}
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; Check the high end of the MSFI range.
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define i32 @f6(i32 %a, ptr %dest) {
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; CHECK-LABEL: f6:
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; CHECK: msfi %r2, 2147483647
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; CHECK: br %r14
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%mul = mul i32 %a, 2147483647
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ret i32 %mul
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}
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; Check the next value up, which should use shifts.
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define i32 @f7(i32 %a, ptr %dest) {
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; CHECK-LABEL: f7:
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; CHECK: sll %r2, 31
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; CHECK: br %r14
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%mul = mul i32 %a, 2147483648
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ret i32 %mul
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}
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; Check the next value up again, which is treated as a negative value.
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define i32 @f8(i32 %a, ptr %dest) {
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; CHECK-LABEL: f8:
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; CHECK: msfi %r2, -2147483647
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; CHECK: br %r14
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%mul = mul i32 %a, 2147483649
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ret i32 %mul
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}
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; Check multiplication by -1, which is a negation.
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define i32 @f9(i32 %a, ptr %dest) {
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; CHECK-LABEL: f9:
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; CHECK: lcr %r2, %r2
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; CHECK: br %r14
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%mul = mul i32 %a, -1
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ret i32 %mul
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}
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; Check multiplication by -2, which should use shifts.
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define i32 @f10(i32 %a, ptr %dest) {
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; CHECK-LABEL: f10:
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; CHECK: sll %r2, 1
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; CHECK: lcr %r2, %r2
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; CHECK: br %r14
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%mul = mul i32 %a, -2
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ret i32 %mul
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}
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; Check multiplication by -3.
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define i32 @f11(i32 %a, ptr %dest) {
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; CHECK-LABEL: f11:
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; CHECK: mhi %r2, -3
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; CHECK: br %r14
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%mul = mul i32 %a, -3
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ret i32 %mul
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}
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; Check the lowest useful MHI value.
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define i32 @f12(i32 %a, ptr %dest) {
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; CHECK-LABEL: f12:
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; CHECK: mhi %r2, -32767
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; CHECK: br %r14
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%mul = mul i32 %a, -32767
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ret i32 %mul
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}
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; Check the next value down, which should use shifts.
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define i32 @f13(i32 %a, ptr %dest) {
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; CHECK-LABEL: f13:
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; CHECK: sll %r2, 15
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; CHECK: lcr %r2, %r2
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; CHECK: br %r14
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%mul = mul i32 %a, -32768
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ret i32 %mul
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}
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; Check the next value down again, which can use MSFI.
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define i32 @f14(i32 %a, ptr %dest) {
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; CHECK-LABEL: f14:
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; CHECK: msfi %r2, -32769
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; CHECK: br %r14
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%mul = mul i32 %a, -32769
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ret i32 %mul
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}
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; Check the lowest useful MSFI value.
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define i32 @f15(i32 %a, ptr %dest) {
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; CHECK-LABEL: f15:
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; CHECK: msfi %r2, -2147483647
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; CHECK: br %r14
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%mul = mul i32 %a, -2147483647
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ret i32 %mul
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}
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; Check the next value down, which should use shifts.
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define i32 @f16(i32 %a, ptr %dest) {
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; CHECK-LABEL: f16:
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; CHECK: sll %r2, 31
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; CHECK-NOT: lcr
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; CHECK: br %r14
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%mul = mul i32 %a, -2147483648
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ret i32 %mul
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}
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; Check the next value down again, which is treated as a positive value.
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define i32 @f17(i32 %a, ptr %dest) {
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; CHECK-LABEL: f17:
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; CHECK: msfi %r2, 2147483647
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; CHECK: br %r14
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%mul = mul i32 %a, -2147483649
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ret i32 %mul
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}
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