[llvm] [RISCV][GISel] Legalize G_SMULO/G_UMULO (PR #67635)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 27 23:36:57 PDT 2023
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-globalisel
<details>
<summary>Changes</summary>
I'm unhappy with the XLen case when we need to make a libcall. We get two libcalls.
---
Patch is 37.88 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/67635.diff
3 Files Affected:
- (modified) llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp (+8)
- (added) llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-mulo.mir (+340)
- (added) llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-mulo.mir (+442)
``````````diff
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
index 313a8221ab1bd4a..a9d6f61541253f7 100644
--- a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
@@ -145,6 +145,10 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
.legalFor({XLenLLT})
.lower();
// clang-format on
+
+ getActionDefinitionsBuilder({G_SMULO, G_UMULO})
+ .minScalar(0, XLenLLT)
+ .lower();
} else {
getActionDefinitionsBuilder(G_MUL)
.libcallFor({XLenLLT, DoubleXLenLLT})
@@ -152,6 +156,10 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
.clampScalar(0, XLenLLT, DoubleXLenLLT);
getActionDefinitionsBuilder({G_SMULH, G_UMULH}).lowerFor({XLenLLT});
+
+ getActionDefinitionsBuilder({G_SMULO, G_UMULO})
+ .minScalar(0, XLenLLT)
+ .lower();
}
if (ST.hasStdExtM()) {
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-mulo.mir b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-mulo.mir
new file mode 100644
index 000000000000000..35bea08f426a3a3
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-mulo.mir
@@ -0,0 +1,340 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mattr=+m -mtriple=riscv32 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+# RUN: llc -mattr=+zmmul -mtriple=riscv32 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+# RUN: llc -mtriple=riscv32 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s --check-prefix=LIBCALL
+
+---
+name: smulo_i8
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: smulo_i8
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
+ ; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]](s32)
+ ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; CHECK-NEXT: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C1]](s32)
+ ; CHECK-NEXT: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]](s32)
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[ASHR]], [[ASHR1]]
+ ; CHECK-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; CHECK-NEXT: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[MUL]], [[C2]](s32)
+ ; CHECK-NEXT: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[SHL2]], [[C2]](s32)
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[MUL]](s32), [[ASHR2]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: smulo_i8
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; LIBCALL-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
+ ; LIBCALL-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]](s32)
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; LIBCALL-NEXT: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C1]](s32)
+ ; LIBCALL-NEXT: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]](s32)
+ ; LIBCALL-NEXT: $x10 = COPY [[ASHR]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ASHR1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+ ; LIBCALL-NEXT: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[COPY2]], [[C2]](s32)
+ ; LIBCALL-NEXT: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[SHL2]], [[C2]](s32)
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[ASHR2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY2]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %2:_(s32) = COPY $x10
+ %0:_(s8) = G_TRUNC %2(s32)
+ %3:_(s32) = COPY $x11
+ %1:_(s8) = G_TRUNC %3(s32)
+ %4:_(s8), %5:_(s1) = G_SMULO %0, %1
+ %6:_(s32) = G_ANYEXT %4(s8)
+ %7:_(s32) = G_ANYEXT %5(s1)
+ $x10 = COPY %6(s32)
+ $x11 = COPY %7(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name: smulo_i16
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: smulo_i16
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
+ ; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]](s32)
+ ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; CHECK-NEXT: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C1]](s32)
+ ; CHECK-NEXT: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]](s32)
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[ASHR]], [[ASHR1]]
+ ; CHECK-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; CHECK-NEXT: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[MUL]], [[C2]](s32)
+ ; CHECK-NEXT: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[SHL2]], [[C2]](s32)
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[MUL]](s32), [[ASHR2]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: smulo_i16
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; LIBCALL-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
+ ; LIBCALL-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]](s32)
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; LIBCALL-NEXT: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C1]](s32)
+ ; LIBCALL-NEXT: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]](s32)
+ ; LIBCALL-NEXT: $x10 = COPY [[ASHR]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ASHR1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+ ; LIBCALL-NEXT: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[COPY2]], [[C2]](s32)
+ ; LIBCALL-NEXT: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[SHL2]], [[C2]](s32)
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[ASHR2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY2]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %2:_(s32) = COPY $x10
+ %0:_(s16) = G_TRUNC %2(s32)
+ %3:_(s32) = COPY $x11
+ %1:_(s16) = G_TRUNC %3(s32)
+ %4:_(s16), %5:_(s1) = G_SMULO %0, %1
+ %6:_(s32) = G_ANYEXT %4(s16)
+ %7:_(s32) = G_ANYEXT %5(s1)
+ $x10 = COPY %6(s32)
+ $x11 = COPY %7(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name: smulo_i32
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: smulo_i32
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[SMULH:%[0-9]+]]:_(s32) = G_SMULH [[COPY]], [[COPY1]]
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[COPY]], [[COPY1]]
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
+ ; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[MUL]], [[C]](s32)
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[SMULH]](s32), [[ASHR]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: smulo_i32
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
+ ; LIBCALL-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[COPY]], [[C]](s32)
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
+ ; LIBCALL-NEXT: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[COPY1]], [[C1]](s32)
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ASHR]](s32)
+ ; LIBCALL-NEXT: $x12 = COPY [[COPY1]](s32)
+ ; LIBCALL-NEXT: $x13 = COPY [[ASHR1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__muldi3, implicit-def $x1, implicit $x10, implicit $x11, implicit $x12, implicit $x13, implicit-def $x10, implicit-def $x11
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[COPY1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
+ ; LIBCALL-NEXT: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[COPY3]], [[C2]](s32)
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[ASHR2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY3]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %0:_(s32) = COPY $x10
+ %1:_(s32) = COPY $x11
+ %2:_(s32), %3:_(s1) = G_SMULO %0, %1
+ %4:_(s32) = G_ANYEXT %3(s1)
+ $x10 = COPY %2(s32)
+ $x11 = COPY %4(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name: umulo_i8
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: umulo_i8
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+ ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C1]]
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND]], [[AND1]]
+ ; CHECK-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[MUL]], [[C2]]
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[MUL]](s32), [[AND2]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: umulo_i8
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; LIBCALL-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; LIBCALL-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C1]]
+ ; LIBCALL-NEXT: $x10 = COPY [[AND]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[AND1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; LIBCALL-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[COPY2]], [[C2]]
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[AND2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY2]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %2:_(s32) = COPY $x10
+ %0:_(s8) = G_TRUNC %2(s32)
+ %3:_(s32) = COPY $x11
+ %1:_(s8) = G_TRUNC %3(s32)
+ %4:_(s8), %5:_(s1) = G_UMULO %0, %1
+ %6:_(s32) = G_ANYEXT %4(s8)
+ %7:_(s32) = G_ANYEXT %5(s1)
+ $x10 = COPY %6(s32)
+ $x11 = COPY %7(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name: umulo_i16
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: umulo_i16
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; CHECK-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+ ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; CHECK-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C1]]
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND]], [[AND1]]
+ ; CHECK-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; CHECK-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[MUL]], [[C2]]
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[MUL]](s32), [[AND2]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: umulo_i16
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; LIBCALL-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; LIBCALL-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C1]]
+ ; LIBCALL-NEXT: $x10 = COPY [[AND]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[AND1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
+ ; LIBCALL-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[COPY2]], [[C2]]
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[AND2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY2]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %2:_(s32) = COPY $x10
+ %0:_(s16) = G_TRUNC %2(s32)
+ %3:_(s32) = COPY $x11
+ %1:_(s16) = G_TRUNC %3(s32)
+ %4:_(s16), %5:_(s1) = G_UMULO %0, %1
+ %6:_(s32) = G_ANYEXT %4(s16)
+ %7:_(s32) = G_ANYEXT %5(s1)
+ $x10 = COPY %6(s32)
+ $x11 = COPY %7(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name: umulo_i32
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: umulo_i32
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; CHECK-NEXT: [[UMULH:%[0-9]+]]:_(s32) = G_UMULH [[COPY]], [[COPY1]]
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[COPY]], [[COPY1]]
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[UMULH]](s32), [[C]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s32)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: umulo_i32
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[C]](s32)
+ ; LIBCALL-NEXT: $x12 = COPY [[COPY1]](s32)
+ ; LIBCALL-NEXT: $x13 = COPY [[C1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__muldi3, implicit-def $x1, implicit $x10, implicit $x11, implicit $x12, implicit $x13, implicit-def $x10, implicit-def $x11
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $x11
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[COPY1]](s32)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__mulsi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $x10
+ ; LIBCALL-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[COPY2]](s32), [[C2]]
+ ; LIBCALL-NEXT: $x10 = COPY [[COPY3]](s32)
+ ; LIBCALL-NEXT: $x11 = COPY [[ICMP]](s32)
+ ; LIBCALL-NEXT: PseudoRET implicit $x10, implicit $x11
+ %0:_(s32) = COPY $x10
+ %1:_(s32) = COPY $x11
+ %2:_(s32), %3:_(s1) = G_UMULO %0, %1
+ %4:_(s32) = G_ANYEXT %3(s1)
+ $x10 = COPY %2(s32)
+ $x11 = COPY %4(s32)
+ PseudoRET implicit $x10, implicit $x11
+
+...
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-mulo.mir b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-mulo.mir
new file mode 100644
index 000000000000000..219635914efdd1d
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-mulo.mir
@@ -0,0 +1,442 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mattr=+m -mtriple=riscv64 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+# RUN: llc -mattr=+zmmul -mtriple=riscv64 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+# RUN: llc -mtriple=riscv64 -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s --check-prefix=LIBCALL
+
+---
+name: smulo_i8
+body: |
+ bb.1:
+ liveins: $x10, $x11
+
+ ; CHECK-LABEL: name: smulo_i8
+ ; CHECK: liveins: $x10, $x11
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[COPY]], [[C]](s64)
+ ; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[SHL]], [[C]](s64)
+ ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; CHECK-NEXT: [[SHL1:%[0-9]+]]:_(s64) = G_SHL [[COPY1]], [[C1]](s64)
+ ; CHECK-NEXT: [[ASHR1:%[0-9]+]]:_(s64) = G_ASHR [[SHL1]], [[C1]](s64)
+ ; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[ASHR]], [[ASHR1]]
+ ; CHECK-NEXT: [[C2:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; CHECK-NEXT: [[SHL2:%[0-9]+]]:_(s64) = G_SHL [[MUL]], [[C2]](s64)
+ ; CHECK-NEXT: [[ASHR2:%[0-9]+]]:_(s64) = G_ASHR [[SHL2]], [[C2]](s64)
+ ; CHECK-NEXT: [[ICMP:%[0-9]+]]:_(s64) = G_ICMP intpred(ne), [[MUL]](s64), [[ASHR2]]
+ ; CHECK-NEXT: $x10 = COPY [[MUL]](s64)
+ ; CHECK-NEXT: $x11 = COPY [[ICMP]](s64)
+ ; CHECK-NEXT: PseudoRET implicit $x10, implicit $x11
+ ;
+ ; LIBCALL-LABEL: name: smulo_i8
+ ; LIBCALL: liveins: $x10, $x11
+ ; LIBCALL-NEXT: {{ $}}
+ ; LIBCALL-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+ ; LIBCALL-NEXT: [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+ ; LIBCALL-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; LIBCALL-NEXT: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[COPY]], [[C]](s64)
+ ; LIBCALL-NEXT: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[SHL]], [[C]](s64)
+ ; LIBCALL-NEXT: [[C1:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; LIBCALL-NEXT: [[SHL1:%[0-9]+]]:_(s64) = G_SHL [[COPY1]], [[C1]](s64)
+ ; LIBCALL-NEXT: [[ASHR1:%[0-9]+]]:_(s64) = G_ASHR [[SHL1]], [[C1]](s64)
+ ; LIBCALL-NEXT: $x10 = COPY [[ASHR]](s64)
+ ; LIBCALL-NEXT: $x11 = COPY [[ASHR1]](s64)
+ ; LIBCALL-NEXT: PseudoCALL target-flags(riscv-call) &__muldi3, implicit-def $x1, implicit $x10, implicit $x11, implicit-def $x10
+ ; LIBCALL-NEXT: [[COPY2:%[0-9]+]]:_(s64) = COPY $x10
+ ; LIBCALL-NEXT: [[C2:%[0-9]+]]:_(s64) = G_CONSTANT i64 56
+ ; LIBCALL-NEXT: [[SHL2:%[0-9]+...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/67635
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