[PATCH] D65079: [GlobalISel][AArch64] Fix narrowScalar for G_ICMP
Petar Avramovic via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 22 05:59:09 PDT 2019
Petar.Avramovic created this revision.
Petar.Avramovic added reviewers: brzycki, dsanders.
Herald added subscribers: llvm-commits, kristof.beyls, javed.absar, rovka.
Herald added a project: LLVM.
Repository:
rL LLVM
https://reviews.llvm.org/D65079
Files:
lib/Target/AArch64/AArch64LegalizerInfo.cpp
test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir
Index: test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir
===================================================================
--- test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir
+++ test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir
@@ -38,3 +38,46 @@
$w0 = COPY %14(s32)
...
+---
+name: test_icmp_s128
+alignment: 2
+tracksRegLiveness: true
+body: |
+ bb.1.entry:
+ liveins: $x0, $x1
+
+ ; CHECK-LABEL: name: test_icmp_s128
+ ; CHECK: liveins: $x0, $x1
+ ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
+ ; CHECK: [[COPY1:%[0-9]+]]:_(p0) = COPY $x1
+ ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load 8, align 16)
+ ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
+ ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY]], [[C]](s64)
+ ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP]](p0) :: (load 8)
+ ; CHECK: [[LOAD2:%[0-9]+]]:_(s64) = G_LOAD [[COPY1]](p0) :: (load 8, align 16)
+ ; CHECK: [[GEP1:%[0-9]+]]:_(p0) = G_GEP [[COPY1]], [[C]](s64)
+ ; CHECK: [[LOAD3:%[0-9]+]]:_(s64) = G_LOAD [[GEP1]](p0) :: (load 8)
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(slt), [[LOAD1]](s64), [[LOAD3]]
+ ; CHECK: [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[LOAD1]](s64), [[LOAD3]]
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP1]](s32)
+ ; CHECK: [[ICMP2:%[0-9]+]]:_(s32) = G_ICMP intpred(ult), [[LOAD]](s64), [[LOAD2]]
+ ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ICMP2]](s32)
+ ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32)
+ ; CHECK: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[TRUNC]](s1), [[COPY2]], [[COPY3]]
+ ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[SELECT]](s32)
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY4]], [[C1]]
+ ; CHECK: [[COPY5:%[0-9]+]]:_(s32) = COPY [[AND]](s32)
+ ; CHECK: $w0 = COPY [[COPY5]](s32)
+ ; CHECK: RET_ReallyLR implicit $w0
+ %0:_(p0) = COPY $x0
+ %1:_(p0) = COPY $x1
+ %2:_(s128) = G_LOAD %0(p0) :: (load 16)
+ %3:_(s128) = G_LOAD %1(p0) :: (load 16)
+ %4:_(s1) = G_ICMP intpred(slt), %2(s128), %3
+ %5:_(s8) = G_ZEXT %4(s1)
+ %6:_(s32) = G_ANYEXT %5(s8)
+ $w0 = COPY %6(s32)
+ RET_ReallyLR implicit $w0
+
+...
Index: lib/Target/AArch64/AArch64LegalizerInfo.cpp
===================================================================
--- lib/Target/AArch64/AArch64LegalizerInfo.cpp
+++ lib/Target/AArch64/AArch64LegalizerInfo.cpp
@@ -307,8 +307,8 @@
{v8s16, v8s16},
{v8s8, v8s8},
{v16s8, v16s8}})
- .clampScalar(0, s32, s32)
.clampScalar(1, s32, s64)
+ .clampScalar(0, s32, s32)
.minScalarEltSameAsIf(
[=](const LegalityQuery &Query) {
const LLT &Ty = Query.Types[0];
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