1 ; RUN: llc -mtriple=arm64-apple-ios -O2 -aarch64-collect-loh -aarch64-collect-loh-bb-only=false < %s -o - | FileCheck %s 2 ; RUN: llc -mtriple=arm64-linux-gnu -O2 -aarch64-collect-loh -aarch64-collect-loh-bb-only=false < %s -o - | FileCheck %s --check-prefix=CHECK-ELF 3 4 ; CHECK-ELF-NOT: .loh 5 ; CHECK-ELF-NOT: AdrpAdrp 6 ; CHECK-ELF-NOT: AdrpAdd 7 ; CHECK-ELF-NOT: AdrpLdrGot 8 9 @a = internal unnamed_addr global i32 0, align 4 10 @b = external global i32 11 12 ; Function Attrs: noinline nounwind ssp 13 define void @foo(i32 %t) { 14 entry: 15 %tmp = load i32* @a, align 4 16 %add = add nsw i32 %tmp, %t 17 store i32 %add, i32* @a, align 4 18 ret void 19 } 20 21 ; Function Attrs: nounwind ssp 22 ; Testcase for <rdar://problem/15438605>, AdrpAdrp reuse is valid only when the first adrp 23 ; dominates the second. 24 ; The first adrp comes from the loading of 'a' and the second the loading of 'b'. 25 ; 'a' is loaded in if.then, 'b' in if.end4, if.then does not dominates if.end4. 26 ; CHECK-LABEL: _test 27 ; CHECK: ret 28 ; CHECK-NOT: .loh AdrpAdrp 29 define i32 @test(i32 %t) { 30 entry: 31 %cmp = icmp sgt i32 %t, 5 32 br i1 %cmp, label %if.then, label %if.end4 33 34 if.then: ; preds = %entry 35 %tmp = load i32* @a, align 4 36 %add = add nsw i32 %tmp, %t 37 %cmp1 = icmp sgt i32 %add, 12 38 br i1 %cmp1, label %if.then2, label %if.end4 39 40 if.then2: ; preds = %if.then 41 tail call void @foo(i32 %add) 42 %tmp1 = load i32* @a, align 4 43 br label %if.end4 44 45 if.end4: ; preds = %if.then2, %if.then, %entry 46 %t.addr.0 = phi i32 [ %tmp1, %if.then2 ], [ %t, %if.then ], [ %t, %entry ] 47 %tmp2 = load i32* @b, align 4 48 %add5 = add nsw i32 %tmp2, %t.addr.0 49 tail call void @foo(i32 %add5) 50 %tmp3 = load i32* @b, align 4 51 %add6 = add nsw i32 %tmp3, %t.addr.0 52 ret i32 %add6 53 } 54
