xref: /llvm-project/llvm/test/CodeGen/RISCV/overflow-intrinsic-optimizations.ll (revision 1456b68686808fa7c6ed7327aba65b639f81d5b8)
1e9b3f257SNick Desaulniers; RUN: llc %s -mtriple=riscv32 -o - | FileCheck %s
2e9b3f257SNick Desaulniers
3*1456b686SNikita Popovdefine i1 @no__mulodi4(i32 %a, i64 %b, ptr %c) {
4e9b3f257SNick Desaulniers; CHECK-LABEL: no__mulodi4
5e9b3f257SNick Desaulniers; CHECK-NOT: call __mulodi4@plt
6e9b3f257SNick Desaulniers; CHECK-NOT: call __multi3@plt
7e9b3f257SNick Desaulniersentry:
8e9b3f257SNick Desaulniers  %0 = sext i32 %a to i64
9e9b3f257SNick Desaulniers  %1 = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 %0, i64 %b)
10e9b3f257SNick Desaulniers  %2 = extractvalue { i64, i1 } %1, 1
11e9b3f257SNick Desaulniers  %3 = extractvalue { i64, i1 } %1, 0
12e9b3f257SNick Desaulniers  %4 = trunc i64 %3 to i32
13e9b3f257SNick Desaulniers  %5 = sext i32 %4 to i64
14e9b3f257SNick Desaulniers  %6 = icmp ne i64 %3, %5
15e9b3f257SNick Desaulniers  %7 = or i1 %2, %6
16*1456b686SNikita Popov  store i32 %4, ptr %c, align 4
17e9b3f257SNick Desaulniers  ret i1 %7
18e9b3f257SNick Desaulniers}
19e9b3f257SNick Desaulniers
20e9b3f257SNick Desaulniersdeclare { i64, i1 } @llvm.smul.with.overflow.i64(i64, i64)
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