[GlobalISel][X86] Support G_LOAD/G_STORE i1.

Summary: Support G_LOAD/G_STORE i1.

Reviewers: zvi, guyblank

Reviewed By: guyblank

Subscribers: rovka, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D35178

llvm-svn: 307527

llvm/lib/Target/X86/X86LegalizerInfo.cpp

@@ -69,6 +69,7 @@ void X86LegalizerInfo::setLegalizerInfo32bit() {
     for (auto Ty : {s8, s16, s32, p0})
       setAction({MemOp, Ty}, Legal);
 
+    setAction({MemOp, s1}, WidenScalar);
     // And everything's fine in addrspace 0.
     setAction({MemOp, 1, p0}, Legal);
   }
@@ -128,6 +129,7 @@ void X86LegalizerInfo::setLegalizerInfo64bit() {
     for (auto Ty : {s8, s16, s32, s64, p0})
       setAction({MemOp, Ty}, Legal);
 
+    setAction({MemOp, s1}, WidenScalar);
     // And everything's fine in addrspace 0.
     setAction({MemOp, 1, p0}, Legal);
   }

llvm/test/CodeGen/X86/GlobalISel/legalize-memop-scalar.mir

@@ -26,11 +26,18 @@ registers:
   - { id: 6, class: _, preferred-register: '' }
   - { id: 7, class: _, preferred-register: '' }
   - { id: 8, class: _, preferred-register: '' }
+  - { id: 9, class: _, preferred-register: '' }
+  - { id: 10, class: _, preferred-register: '' }
 # ALL:          %0(p0) = IMPLICIT_DEF
+# ALL-NEXT:     %11(s8) = G_LOAD %0(p0) :: (load 1)
+# ALL-NEXT:     %9(s1) = G_TRUNC %11(s8)
 # ALL-NEXT:     %1(s8) = G_LOAD %0(p0) :: (load 1)
 # ALL-NEXT:     %2(s16) = G_LOAD %0(p0) :: (load 2)
 # ALL-NEXT:     %3(s32) = G_LOAD %0(p0) :: (load 4)
 # ALL-NEXT:     %4(p0) = G_LOAD %0(p0) :: (load 8)
+# ALL-NEXT:     %10(s1) = IMPLICIT_DEF
+# ALL-NEXT:     %12(s8) = G_ZEXT %10(s1)
+# ALL-NEXT:     G_STORE %12(s8), %0(p0) :: (store 1)
 # ALL-NEXT:     %5(s8) = IMPLICIT_DEF
 # ALL-NEXT:     G_STORE %5(s8), %0(p0) :: (store 1)
 # ALL-NEXT:     %6(s16) = IMPLICIT_DEF
@@ -44,11 +51,14 @@ body:             |
     liveins: %rdi
 
     %0(p0) = IMPLICIT_DEF
+    %9(s1) = G_LOAD %0(p0) :: (load 1)
     %1(s8) = G_LOAD %0(p0) :: (load 1)
     %2(s16) = G_LOAD %0(p0) :: (load 2)
     %3(s32) = G_LOAD %0(p0) :: (load 4)
     %4(p0) = G_LOAD %0(p0) :: (load 8)
 
+    %10(s1) = IMPLICIT_DEF
+    G_STORE %10, %0 :: (store 1)
     %5(s8) = IMPLICIT_DEF
     G_STORE %5, %0 :: (store 1)
     %6(s16) = IMPLICIT_DEF

llvm/test/CodeGen/X86/GlobalISel/memop-scalar-x32.ll

@@ -4,6 +4,16 @@
 
 ;TODO merge with x86-64 tests (many operations not suppored yet)
 
+define i1 @test_load_i1(i1 * %p1) {
+; ALL-LABEL: test_load_i1:
+; ALL:       # BB#0:
+; ALL-NEXT:    movl 4(%esp), %eax
+; ALL-NEXT:    movb (%eax), %al
+; ALL-NEXT:    retl
+  %r = load i1, i1* %p1
+  ret i1 %r
+}
+
 define i8 @test_load_i8(i8 * %p1) {
 ; ALL-LABEL: test_load_i8:
 ; ALL:       # BB#0:
@@ -34,6 +44,18 @@ define i32 @test_load_i32(i32 * %p1) {
   ret i32 %r
 }
 
+define i1 * @test_store_i1(i1 %val, i1 * %p1) {
+; ALL-LABEL: test_store_i1:
+; ALL:       # BB#0:
+; ALL-NEXT:    movb 4(%esp), %cl
+; ALL-NEXT:    movl 8(%esp), %eax
+; ALL-NEXT:    andb $1, %cl
+; ALL-NEXT:    movb %cl, (%eax)
+; ALL-NEXT:    retl
+  store i1 %val, i1* %p1
+  ret i1 * %p1;
+}
+
 define i8 * @test_store_i8(i8 %val, i8 * %p1) {
 ; ALL-LABEL: test_store_i8:
 ; ALL:       # BB#0:

llvm/test/CodeGen/X86/GlobalISel/memop-scalar.ll

@@ -2,6 +2,15 @@
 ; RUN: llc -mtriple=x86_64-linux-gnu                       -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=SSE_FAST
 ; RUN: llc -mtriple=x86_64-linux-gnu -regbankselect-greedy -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=SSE_GREEDY
 
+define i1 @test_load_i1(i1 * %p1) {
+; ALL-LABEL: test_load_i1:
+; ALL:       # BB#0:
+; ALL-NEXT:    movb (%rdi), %al
+; ALL-NEXT:    retq
+  %r = load i1, i1* %p1
+  ret i1 %r
+}
+
 define i8 @test_load_i8(i8 * %p1) {
 ; ALL-LABEL: test_load_i8:
 ; ALL:       # BB#0:
@@ -70,6 +79,17 @@ define double @test_load_double(double * %p1) {
   ret double %r
 }
 
+define i1 * @test_store_i1(i1 %val, i1 * %p1) {
+; ALL-LABEL: test_store_i1:
+; ALL:       # BB#0:
+; ALL-NEXT:    andb $1, %dil
+; ALL-NEXT:    movb %dil, (%rsi)
+; ALL-NEXT:    movq %rsi, %rax
+; ALL-NEXT:    retq
+  store i1 %val, i1* %p1
+  ret i1 * %p1;
+}
+
 define i32 * @test_store_i32(i32 %val, i32 * %p1) {
 ; ALL-LABEL: test_store_i32:
 ; ALL:       # BB#0: