Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/AArch64/arm64-cse.ll

@@ -1,59 +0,0 @@
-; RUN: llc -O3 < %s -aarch64-enable-atomic-cfg-tidy=0 -aarch64-enable-gep-opt=false -verify-machineinstrs | FileCheck %s
-target triple = "arm64-apple-ios"
-
-; rdar://12462006
-; CSE between "icmp reg reg" and "sub reg reg".
-; Both can be in the same basic block or in different basic blocks.
-define i8* @t1(i8* %base, i32* nocapture %offset, i32 %size) nounwind {
-entry:
-; CHECK-LABEL: t1:
-; CHECK: subs
-; CHECK-NOT: cmp
-; CHECK-NOT: sub
-; CHECK: b.ge
-; CHECK: sub
-; CHECK: sub
-; CHECK-NOT: sub
-; CHECK: ret
- %0 = load i32, i32* %offset, align 4
- %cmp = icmp slt i32 %0, %size
- %s = sub nsw i32 %0, %size
- br i1 %cmp, label %return, label %if.end
-
-if.end:
- %sub = sub nsw i32 %0, %size
- %s2 = sub nsw i32 %s, %size
- %s3 = sub nsw i32 %sub, %s2
- store i32 %s3, i32* %offset, align 4
- %add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub
- br label %return
-
-return:
- %retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]
- ret i8* %retval.0
-}
-
-; CSE between "icmp reg imm" and "sub reg imm".
-define i8* @t2(i8* %base, i32* nocapture %offset) nounwind {
-entry:
-; CHECK-LABEL: t2:
-; CHECK: subs
-; CHECK-NOT: cmp
-; CHECK-NOT: sub
-; CHECK: b.lt
-; CHECK-NOT: sub
-; CHECK: ret
- %0 = load i32, i32* %offset, align 4
- %cmp = icmp slt i32 %0, 1
- br i1 %cmp, label %return, label %if.end
-
-if.end:
- %sub = sub nsw i32 %0, 1
- store i32 %sub, i32* %offset, align 4
- %add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub
- br label %return
-
-return:
- %retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]
- ret i8* %retval.0
-}