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.
270 lines
7.2 KiB
LLVM
270 lines
7.2 KiB
LLVM
; Test high-part i64->i128 multiplications.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -asm-verbose=0 | FileCheck %s
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declare i64 @foo()
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; Check zero-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: mlgr %r2, %r4
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; CHECK: br %r14
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%ax = zext i64 %a to i128
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%bx = zext 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 the high part is used.
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; This needs a rather convoluted sequence.
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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-DAG: srag [[RES1:%r[0-5]]], %r3, 63
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; CHECK-DAG: srag [[RES2:%r[0-5]]], %r4, 63
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; CHECK-DAG: ngr [[RES1]], %r4
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; CHECK-DAG: ngr [[RES2]], %r3
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; CHECK-DAG: agr [[RES2]], [[RES1]]
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; CHECK-DAG: mlgr %r2, %r4
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; CHECK: sgr %r2, [[RES2]]
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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 zero-extended multiplication in which only part of the high half
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; is used.
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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: mlgr %r2, %r4
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; CHECK: srlg %r2, %r2, 3
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; CHECK: br %r14
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%ax = zext i64 %a to i128
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%bx = zext 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 zero-extended multiplication in which the result is split into
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; high and low halves.
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define i64 @f4(i64 %dummy, i64 %a, i64 %b) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: {{%r[234]}}
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; CHECK: mlgr %r2, %r4
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; CHECK: ogr %r3, %r2
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; CHECK: lgr %r2, %r3
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; CHECK: br %r14
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%ax = zext i64 %a to i128
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%bx = zext 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 division by a constant, which should use multiplication instead.
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define i64 @f5(i64 %dummy, i64 %a) {
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; CHECK-LABEL: f5:
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; CHECK: mlgr %r2,
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; CHECK: srlg %r2, %r2,
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; CHECK: br %r14
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%res = udiv i64 %a, 1234
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ret i64 %res
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}
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; Check MLG with no displacement.
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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-NOT: {{%r[234]}}
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; CHECK: mlg %r2, 0(%r4)
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; CHECK: br %r14
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%b = load i64, ptr %src
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%ax = zext i64 %a to i128
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%bx = zext 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 MLG 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: mlg %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 = zext i64 %a to i128
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%bx = zext 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 @f8(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f8:
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; CHECK: agfi %r4, 524288
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; CHECK: mlg %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 = zext i64 %a to i128
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%bx = zext 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 MLG range.
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define i64 @f9(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f9:
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; CHECK: mlg %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 = zext i64 %a to i128
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%bx = zext 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 MLG range.
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define i64 @f10(i64 %dummy, i64 %a, ptr %src) {
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; CHECK-LABEL: f10:
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; CHECK: mlg %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 = zext i64 %a to i128
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%bx = zext 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 @f11(ptr %dest, i64 %a, ptr %src) {
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; CHECK-LABEL: f11:
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; CHECK: agfi %r4, -524296
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; CHECK: mlg %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 = zext i64 %a to i128
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%bx = zext 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 MLG allows an index.
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define i64 @f12(ptr %dest, i64 %a, i64 %src, i64 %index) {
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; CHECK-LABEL: f12:
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; CHECK: mlg %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 = zext i64 %a to i128
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%bx = zext 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 multiplications of spilled values can use MLG rather than MLGR.
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define i64 @f13(ptr %ptr0) {
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; CHECK-LABEL: f13:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: mlg {{%r[0-9]+}}, 160(%r15)
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; CHECK: br %r14
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%ptr1 = getelementptr i64, ptr %ptr0, i64 2
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%ptr2 = getelementptr i64, ptr %ptr0, i64 4
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%ptr3 = getelementptr i64, ptr %ptr0, i64 6
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%ptr4 = getelementptr i64, ptr %ptr0, i64 8
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%ptr5 = getelementptr i64, ptr %ptr0, i64 10
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%ptr6 = getelementptr i64, ptr %ptr0, i64 12
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%ptr7 = getelementptr i64, ptr %ptr0, i64 14
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%ptr8 = getelementptr i64, ptr %ptr0, i64 16
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%ptr9 = getelementptr i64, ptr %ptr0, i64 18
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%val0 = load i64, ptr %ptr0
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%val1 = load i64, ptr %ptr1
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%val2 = load i64, ptr %ptr2
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%val3 = load i64, ptr %ptr3
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%val4 = load i64, ptr %ptr4
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%val5 = load i64, ptr %ptr5
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%val6 = load i64, ptr %ptr6
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%val7 = load i64, ptr %ptr7
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%val8 = load i64, ptr %ptr8
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%val9 = load i64, ptr %ptr9
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%ret = call i64 @foo()
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%retx = zext i64 %ret to i128
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%val0x = zext i64 %val0 to i128
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%mul0d = mul i128 %retx, %val0x
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%mul0x = lshr i128 %mul0d, 64
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%val1x = zext i64 %val1 to i128
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%mul1d = mul i128 %mul0x, %val1x
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%mul1x = lshr i128 %mul1d, 64
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%val2x = zext i64 %val2 to i128
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%mul2d = mul i128 %mul1x, %val2x
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%mul2x = lshr i128 %mul2d, 64
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%val3x = zext i64 %val3 to i128
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%mul3d = mul i128 %mul2x, %val3x
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%mul3x = lshr i128 %mul3d, 64
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%val4x = zext i64 %val4 to i128
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%mul4d = mul i128 %mul3x, %val4x
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%mul4x = lshr i128 %mul4d, 64
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%val5x = zext i64 %val5 to i128
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%mul5d = mul i128 %mul4x, %val5x
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%mul5x = lshr i128 %mul5d, 64
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%val6x = zext i64 %val6 to i128
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%mul6d = mul i128 %mul5x, %val6x
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%mul6x = lshr i128 %mul6d, 64
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%val7x = zext i64 %val7 to i128
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%mul7d = mul i128 %mul6x, %val7x
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%mul7x = lshr i128 %mul7d, 64
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%val8x = zext i64 %val8 to i128
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%mul8d = mul i128 %mul7x, %val8x
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%mul8x = lshr i128 %mul8d, 64
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%val9x = zext i64 %val9 to i128
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%mul9d = mul i128 %mul8x, %val9x
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%mul9x = lshr i128 %mul9d, 64
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%mul9 = trunc i128 %mul9x to i64
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ret i64 %mul9
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}
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