Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/ConstantHoisting/ARM/bad-cases.ll

@@ -0,0 +1,140 @@
+; RUN: opt -consthoist -S < %s | FileCheck %s
+target triple = "thumbv6m-none-eabi"
+
+; Allocas in the entry block get handled (for free) by
+; prologue/epilogue. Elsewhere they're fair game though.
+define void @avoid_allocas() {
+; CHECK-LABEL: @avoid_allocas
+; CHECK: %addr1 = alloca i8, i32 1000
+; CHECK: %addr2 = alloca i8, i32 1020
+
+  %addr1 = alloca i8, i32 1000
+  %addr2 = alloca i8, i32 1020
+  br label %elsewhere
+
+elsewhere:
+; CHECK: [[BASE:%.*]] = bitcast i32 1000 to i32
+; CHECK: alloca i8, i32 [[BASE]]
+; CHECK: [[NEXT:%.*]] = add i32 [[BASE]], 20
+; CHECK: alloca i8, i32 [[NEXT]]
+
+  %addr3 = alloca i8, i32 1000
+  %addr4 = alloca i8, i32 1020
+
+  ret void
+}
+
+; The case values of switch instructions are required to be constants.
+define void @avoid_switch(i32 %in) {
+; CHECK-LABEL: @avoid_switch
+; CHECK:   switch i32 %in, label %default [
+; CHECK:       i32 1000, label %bb1
+; CHECK:       i32 1020, label %bb2
+; CHECK:   ]
+
+  switch i32 %in, label %default
+      [ i32 1000, label %bb1
+        i32 1020, label %bb2 ]
+
+bb1:
+  ret void
+
+bb2:
+  ret void
+
+default:
+  ret void
+}
+
+; We don't want to convert constant divides because the benefit from converting
+; them to a mul in the backend is larget than constant materialization savings.
+define void @signed_const_division(i32 %in1, i32 %in2, i32* %addr) {
+; CHECK-LABEL: @signed_const_division
+; CHECK: %res1 = sdiv i32 %l1, 1000000000
+; CHECK: %res2 = srem i32 %l2, 1000000000
+entry:
+  br label %loop
+
+loop:
+  %l1 = phi i32 [%res1, %loop], [%in1, %entry]
+  %l2 = phi i32 [%res2, %loop], [%in2, %entry]
+  %res1 = sdiv i32 %l1, 1000000000
+  store volatile i32 %res1, i32* %addr
+  %res2 = srem i32 %l2, 1000000000
+  store volatile i32 %res2, i32* %addr
+  %again = icmp eq i32 %res1, %res2
+  br i1 %again, label %loop, label %end
+
+end:
+  ret void
+}
+
+define void @unsigned_const_division(i32 %in1, i32 %in2, i32* %addr) {
+; CHECK-LABEL: @unsigned_const_division
+; CHECK: %res1 = udiv i32 %l1, 1000000000
+; CHECK: %res2 = urem i32 %l2, 1000000000
+
+entry:
+  br label %loop
+
+loop:
+  %l1 = phi i32 [%res1, %loop], [%in1, %entry]
+  %l2 = phi i32 [%res2, %loop], [%in2, %entry]
+  %res1 = udiv i32 %l1, 1000000000
+  store volatile i32 %res1, i32* %addr
+  %res2 = urem i32 %l2, 1000000000
+  store volatile i32 %res2, i32* %addr
+  %again = icmp eq i32 %res1, %res2
+  br i1 %again, label %loop, label %end
+
+end:
+  ret void
+}
+
+;PR 28282: even when data type is larger than 64-bit, the bit width of the
+;constant operand could be smaller than 64-bit. In this case, there is no
+;benefit to hoist the constant.
+define i32 @struct_type_test(i96 %a0, i96 %a1) {
+;CHECK-LABEL: @struct_type_test
+entry:
+;CHECK-NOT: %const = bitcast i96 32 to i96
+;CHECK: lshr0 = lshr i96 %a0, 32
+  %lshr0 = lshr i96 %a0, 32
+  %cast0 = trunc i96 %lshr0 to i32
+;CHECK: lshr1 = lshr i96 %a1, 32
+  %lshr1 = lshr i96 %a1, 32
+  %cast1 = trunc i96 %lshr1 to i32
+  %ret = add i32 %cast0, %cast1
+  ret i32 %ret
+}
+
+@exception_type = external global i8
+
+; Constants in inline ASM should not be hoisted.
+define i32 @inline_asm_invoke() personality i8* null {
+;CHECK-LABEL: @inline_asm_invoke
+;CHECK-NOT: %const = 214672
+;CHECK: %X = invoke i32 asm "bswap $0", "=r,r"(i32 214672)
+  %X = invoke i32 asm "bswap $0", "=r,r"(i32 214672)
+                  to label %L unwind label %lpad
+;CHECK: %Y = invoke i32 asm "bswap $0", "=r,r"(i32 214672)
+  %Y = invoke i32 asm "bswap $0", "=r,r"(i32 214672)
+                  to label %L unwind label %lpad
+L:
+  ret i32 %X
+lpad:
+  %lp = landingpad i32
+      cleanup
+      catch i8* @exception_type
+  ret i32 1
+}
+
+define i32 @inline_asm_call() {
+;CHECK-LABEL: @inline_asm_call
+;CHECK-NOT: %const = 214672
+;CHECK: %X = call i32 asm "bswap $0", "=r,r"(i32 214672)
+  %X = call i32 asm "bswap $0", "=r,r"(i32 214672)
+;CHECK: %Y = call i32 asm "bswap $0", "=r,r"(i32 214672)
+  %Y = call i32 asm "bswap $0", "=r,r"(i32 214672)
+  ret i32 %X
+}

external/llvm/test/Transforms/ConstantHoisting/ARM/const-addr-no-neg-offset.ll

@@ -0,0 +1,42 @@
+; RUN: opt -mtriple=arm-arm-none-eabi -consthoist -S < %s | FileCheck %s
+
+; There are different candidates here for the base constant: 1073876992 and
+; 1073876996. But we don't want to see the latter because it results in
+; negative offsets.
+
+define void @foo() #0 {
+entry:
+; CHECK-LABEL: @foo
+; CHECK-NOT: [[CONST1:%const_mat[0-9]*]] = add i32 %const, -4
+  %0 = load volatile i32, i32* inttoptr (i32 1073876992 to i32*), align 4096
+  %or = or i32 %0, 1
+  store volatile i32 %or, i32* inttoptr (i32 1073876992 to i32*), align 4096
+  %1 = load volatile i32, i32* inttoptr (i32 1073876996 to i32*), align 4
+  %and = and i32 %1, -117506048
+  store volatile i32 %and, i32* inttoptr (i32 1073876996 to i32*), align 4
+  %2 = load volatile i32, i32* inttoptr (i32 1073876992 to i32*), align 4096
+  %and1 = and i32 %2, -17367041
+  store volatile i32 %and1, i32* inttoptr (i32 1073876996 to i32*), align 4096
+  %3 = load volatile i32, i32* inttoptr (i32 1073876992 to i32*), align 4096
+  %and2 = and i32 %3, -262145
+  store volatile i32 %and2, i32* inttoptr (i32 1073876992 to i32*), align 4096
+  %4 = load volatile i32, i32* inttoptr (i32 1073876996 to i32*), align 4
+  %and3 = and i32 %4, -8323073
+  store volatile i32 %and3, i32* inttoptr (i32 1073876996 to i32*), align 4
+  store volatile i32 10420224, i32* inttoptr (i32 1073877000 to i32*), align 8
+  %5 = load volatile i32, i32* inttoptr (i32 1073876996 to i32*), align 4096
+  %or4 = or i32 %5, 65536
+  store volatile i32 %or4, i32* inttoptr (i32 1073876996 to i32*), align 4096
+  %6 = load volatile i32, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  %or6.i.i = or i32 %6, 16
+  store volatile i32 %or6.i.i, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  %7 = load volatile i32, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  %and7.i.i = and i32 %7, -4
+  store volatile i32 %and7.i.i, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  %8 = load volatile i32, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  %or8.i.i = or i32 %8, 2
+  store volatile i32 %or8.i.i, i32* inttoptr (i32 1073881088 to i32*), align 8192
+  ret void
+}
+
+attributes #0 = { minsize norecurse nounwind optsize readnone uwtable }

external/llvm/test/Transforms/ConstantHoisting/ARM/gep-struct-index.ll

@@ -0,0 +1,37 @@
+; RUN: opt -consthoist -S < %s | FileCheck %s
+target triple = "thumbv6m-none-eabi"
+
+%T = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32 }
+
+; Indices for GEPs that index into a struct type should not be hoisted.
+define i32 @test1(%T* %P) nounwind {
+; CHECK-LABEL:  @test1
+; CHECK:        %const = bitcast i32 256 to i32
+; CHECK:        %addr1 = getelementptr %T, %T* %P, i32 %const, i32 256
+; CHECK:        %addr2 = getelementptr %T, %T* %P, i32 %const, i32 256
+; The first index into the pointer is hoisted, but the second one into the
+; struct isn't.
+  %addr1 = getelementptr %T, %T* %P, i32 256, i32 256
+  %tmp1 = load i32, i32* %addr1
+  %addr2 = getelementptr %T, %T* %P, i32 256, i32 256
+  %tmp2 = load i32, i32* %addr2
+  %tmp4 = add i32 %tmp1, %tmp2
+  ret i32 %tmp4
+}
+

external/llvm/test/Transforms/ConstantHoisting/ARM/insertvalue.ll

@@ -0,0 +1,31 @@
+; RUN: opt -consthoist -S < %s | FileCheck %s
+target triple = "thumbv6m-none-eabi"
+
+%T = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32,
+i32, i32, i32, i32, i32, i32 }
+
+; The second operand of insertvalue is able to be hoisted.
+define void @test1(%T %P) {
+; CHECK-LABEL:  @test1
+; CHECK:        %const = bitcast i32 256 to i32
+; CHECK:        %1 = insertvalue %T %P, i32 %const, 256
+; CHECK:        %2 = insertvalue %T %P, i32 %const, 256
+  %1 = insertvalue %T %P, i32 256, 256
+  %2 = insertvalue %T %P, i32 256, 256
+  ret void
+}

external/llvm/test/Transforms/ConstantHoisting/ARM/lit.local.cfg

@@ -0,0 +1,2 @@
+if not 'ARM' in config.root.targets:
+    config.unsupported = True