derek.holloway
7502bf64a4
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357 lines
12 KiB
LLVM
357 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -passes=simplifycfg -S < %s | FileCheck %s
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target datalayout = "pu1:64:64-pe2:64:64:64:32"
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;; TODO: it would probably be better to just emit a pointer compare against null.
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define void @test_default_null_base(ptr addrspace(0) align 8 %ptr) {
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; CHECK-LABEL: define void @test_default_null_base(
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; CHECK-SAME: ptr align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 0
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; CHECK-NEXT: br i1 [[COND]], label %[[TRUE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr [[PTR]], align 8
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; CHECK-NEXT: store i64 3, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET:.*]]
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; CHECK: [[COMMON_RET]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(0) %ptr, null
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%cond2 = icmp eq ptr addrspace(0) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(0) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(0) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(0) %ptr, align 8
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ret void
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}
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;; We should not introduce ptrtoint instructions with unstable pointers
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define void @test_default_inttoptr_base(ptr addrspace(0) align 8 %ptr) {
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; CHECK-LABEL: define void @test_default_inttoptr_base(
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; CHECK-SAME: ptr align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 4
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; CHECK-NEXT: br i1 [[COND]], label %[[TRUE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr [[PTR]], align 8
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; CHECK-NEXT: store i64 3, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET:.*]]
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; CHECK: [[COMMON_RET]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(0) %ptr, inttoptr (i32 4 to ptr addrspace(0))
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%cond2 = icmp eq ptr addrspace(0) %ptr, inttoptr (i32 4 to ptr addrspace(0))
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(0) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(0) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(0) %ptr, align 8
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ret void
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}
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;; We should not introduce ptrtoint instructions with unstable pointers
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define void @test_default_mixed_base(ptr addrspace(0) align 8 %ptr) {
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; CHECK-LABEL: define void @test_default_mixed_base(
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; CHECK-SAME: ptr align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq ptr [[PTR]], null
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 4
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; CHECK-NEXT: br i1 [[COND]], label %[[FALSE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr [[PTR]], align 8
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE2]]
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; CHECK: [[COMMON_RET:.*]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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; CHECK: [[FALSE2]]:
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; CHECK-NEXT: store i64 3, ptr [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(0) %ptr, inttoptr (i32 4 to ptr addrspace(0))
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%cond2 = icmp eq ptr addrspace(0) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(0) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(0) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(0) %ptr, align 8
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ret void
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}
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;; We should not introduce ptrtoint instructions with unstable pointers
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define void @test_unstable_null_base(ptr addrspace(1) align 8 %ptr) {
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; CHECK-LABEL: define void @test_unstable_null_base(
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; CHECK-SAME: ptr addrspace(1) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[COND1:%.*]] = icmp eq ptr addrspace(1) [[PTR]], null
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq ptr addrspace(1) [[PTR]], null
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; CHECK-NEXT: br i1 [[COND1]], label %[[TRUE1:.*]], label %[[FALSE1:.*]]
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; CHECK: [[TRUE1]]:
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE2:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[TRUE1]]
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; CHECK: [[COMMON_RET:.*]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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; CHECK: [[FALSE2]]:
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; CHECK-NEXT: store i64 3, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(1) %ptr, null
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%cond2 = icmp eq ptr addrspace(1) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(1) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(1) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(1) %ptr, align 8
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ret void
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}
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;; We should not introduce ptrtoint instructions with unstable pointers
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define void @test_unstable_inttoptr_base(ptr addrspace(1) align 8 %ptr) {
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; CHECK-LABEL: define void @test_unstable_inttoptr_base(
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; CHECK-SAME: ptr addrspace(1) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[COND1:%.*]] = icmp eq ptr addrspace(1) [[PTR]], inttoptr (i32 4 to ptr addrspace(1))
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq ptr addrspace(1) [[PTR]], inttoptr (i32 4 to ptr addrspace(1))
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; CHECK-NEXT: br i1 [[COND1]], label %[[TRUE1:.*]], label %[[FALSE1:.*]]
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; CHECK: [[TRUE1]]:
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE2:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[TRUE1]]
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; CHECK: [[COMMON_RET:.*]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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; CHECK: [[FALSE2]]:
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; CHECK-NEXT: store i64 3, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(1) %ptr, inttoptr (i32 4 to ptr addrspace(1))
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%cond2 = icmp eq ptr addrspace(1) %ptr, inttoptr (i32 4 to ptr addrspace(1))
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(1) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(1) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(1) %ptr, align 8
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ret void
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}
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;; We should not introduce ptrtoint instructions with unstable pointers
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define void @test_unstable_mixed_base(ptr addrspace(1) align 8 %ptr) {
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; CHECK-LABEL: define void @test_unstable_mixed_base(
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; CHECK-SAME: ptr addrspace(1) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[COND1:%.*]] = icmp eq ptr addrspace(1) [[PTR]], inttoptr (i32 4 to ptr addrspace(1))
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq ptr addrspace(1) [[PTR]], null
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; CHECK-NEXT: br i1 [[COND1]], label %[[TRUE1:.*]], label %[[FALSE1:.*]]
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; CHECK: [[TRUE1]]:
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE2:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[TRUE1]]
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; CHECK: [[COMMON_RET:.*]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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; CHECK: [[FALSE2]]:
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; CHECK-NEXT: store i64 3, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(1) %ptr, inttoptr (i32 4 to ptr addrspace(1))
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%cond2 = icmp eq ptr addrspace(1) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(1) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(1) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(1) %ptr, align 8
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ret void
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}
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;; This transformation is fine for pointers with external state.
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;; TODO: it would probably be better to just emit a pointer compare against null.
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define void @test_external_null_base(ptr addrspace(2) align 8 %ptr) {
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; CHECK-LABEL: define void @test_external_null_base(
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; CHECK-SAME: ptr addrspace(2) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr addrspace(2) [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 0
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; CHECK-NEXT: br i1 [[COND]], label %[[TRUE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: store i64 3, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET:.*]]
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; CHECK: [[COMMON_RET]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(2) %ptr, null
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%cond2 = icmp eq ptr addrspace(2) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(2) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(2) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(2) %ptr, align 8
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ret void
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}
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;; This transformation is fine for pointers with external state (even with inttoptr).
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define void @test_external_inttoptr_base(ptr addrspace(2) align 8 %ptr) {
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; CHECK-LABEL: define void @test_external_inttoptr_base(
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; CHECK-SAME: ptr addrspace(2) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr addrspace(2) [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 4
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; CHECK-NEXT: br i1 [[COND]], label %[[TRUE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: store i64 3, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET:.*]]
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; CHECK: [[COMMON_RET]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(2) %ptr, inttoptr (i32 4 to ptr addrspace(2))
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%cond2 = icmp eq ptr addrspace(2) %ptr, inttoptr (i32 4 to ptr addrspace(2))
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(2) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(2) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(2) %ptr, align 8
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ret void
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}
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;; This transformation is fine for pointers with external state (even with inttoptr).
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define void @test_external_mixed_base(ptr addrspace(2) align 8 %ptr) {
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; CHECK-LABEL: define void @test_external_mixed_base(
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; CHECK-SAME: ptr addrspace(2) align 8 [[PTR:%.*]]) {
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; CHECK-NEXT: [[COND2:%.*]] = icmp eq ptr addrspace(2) [[PTR]], null
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; CHECK-NEXT: [[MAGICPTR:%.*]] = ptrtoint ptr addrspace(2) [[PTR]] to i64
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[MAGICPTR]], 4
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; CHECK-NEXT: br i1 [[COND]], label %[[FALSE2:.*]], label %[[FALSE1:.*]]
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: store i64 1, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE2]]
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; CHECK: [[COMMON_RET:.*]]:
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; CHECK-NEXT: ret void
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: store i64 2, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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; CHECK: [[FALSE2]]:
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; CHECK-NEXT: store i64 3, ptr addrspace(2) [[PTR]], align 8
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; CHECK-NEXT: br label %[[COMMON_RET]]
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;
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%cond1 = icmp eq ptr addrspace(2) %ptr, inttoptr (i32 4 to ptr addrspace(2))
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%cond2 = icmp eq ptr addrspace(2) %ptr, null
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br i1 %cond1, label %true1, label %false1
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true1:
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br i1 %cond2, label %true2, label %false2
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false1:
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store i64 1, ptr addrspace(2) %ptr, align 8
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br label %true1
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true2:
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store i64 2, ptr addrspace(2) %ptr, align 8
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ret void
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false2:
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store i64 3, ptr addrspace(2) %ptr, align 8
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ret void
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}
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