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.
166 lines
4.3 KiB
LLVM
166 lines
4.3 KiB
LLVM
; Test signed high-part i64->i128 multiplications on z14.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 -asm-verbose=0 | FileCheck %s
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declare i64 @foo()
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; Check sign-extended multiplication in which only the high part is used.
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define i64 @f1(i64 %dummy, i64 %a, i64 %b) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: mgrk %r2, %r3, %r4
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; CHECK: br %r14
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check sign-extended multiplication in which only part of the high half
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; is used.
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define i64 @f2(i64 %dummy, i64 %a, i64 %b) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: mgrk [[REG:%r[0-9]+]], %r3, %r4
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; CHECK: srlg %r2, [[REG]], 3
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; CHECK: br %r14
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 67
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check sign-extended multiplication in which the result is split into
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; high and low halves.
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define i64 @f3(i64 %dummy, i64 %a, i64 %b) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: mgrk %r2, %r3, %r4
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; CHECK: ogr %r2, %r3
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; CHECK: br %r14
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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%low = trunc i128 %mulx to i64
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%or = or i64 %high, %low
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ret i64 %or
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}
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; Check MG with no displacement.
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define i64 @f4(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: mg %r2, 0(%r4)
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; CHECK: br %r14
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%b = load i64, ptr %src
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check the high end of the aligned MG range.
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define i64 @f5(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: mg %r2, 524280(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 65535
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check the next doubleword up, which requires separate address logic.
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; Other sequences besides this one would be OK.
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define i64 @f6(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r4, 524288
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; CHECK: mg %r2, 0(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 65536
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check the high end of the negative aligned MG range.
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define i64 @f7(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f7:
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; CHECK: mg %r2, -8(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 -1
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check the low end of the MG range.
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define i64 @f8(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f8:
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; CHECK: mg %r2, -524288(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 -65536
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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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 @f9(ptr %dest, i64 %a, ptr %src) {
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; CHECK-LABEL: f9:
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; CHECK: agfi %r4, -524296
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; CHECK: mg %r2, 0(%r4)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 -65537
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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; Check that MG allows an index.
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define i64 @f10(ptr %dest, i64 %a, i64 %src, i64 %index) {
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; CHECK-LABEL: f10:
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; CHECK: mg %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 ptr
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%b = load i64, ptr %ptr
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%ax = sext i64 %a to i128
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%bx = sext i64 %b to i128
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%mulx = mul i128 %ax, %bx
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%highx = lshr i128 %mulx, 64
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%high = trunc i128 %highx to i64
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ret i64 %high
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}
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