; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s | FileCheck %s target triple = "aarch64-linux" declare i32 @use(...) define i32 @f0(i1 %c1, ptr %p) nounwind { ; CHECK-LABEL: f0: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB0_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill ; CHECK-NEXT: add x0, x1, #8 ; CHECK-NEXT: bl use ; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB0_2: // %if.else ; CHECK-NEXT: ldur w0, [x1, #8] ; CHECK-NEXT: ret entry: %a = getelementptr i32, ptr %p, i32 2 br i1 %c1, label %if.then, label %if.else if.then: %v0 = call i32 @use(ptr %a) br label %exit if.else: %v1 = load i32, ptr %a br label %exit exit: %v = phi i32 [%v0, %if.then], [%v1, %if.else] ret i32 %v } define i32 @f1(i1 %c1, ptr %p, i64 %i) nounwind { ; CHECK-LABEL: f1: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB1_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill ; CHECK-NEXT: add x0, x1, x2 ; CHECK-NEXT: bl use ; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB1_2: // %if.else ; CHECK-NEXT: ldr w0, [x1, x2] ; CHECK-NEXT: ret entry: %a = getelementptr i8, ptr %p, i64 %i br i1 %c1, label %if.then, label %if.else if.then: %v0 = call i32 @use(ptr %a) br label %exit if.else: %v1 = load i32, ptr %a br label %exit exit: %v = phi i32 [%v0, %if.then], [%v1, %if.else] ret i32 %v } ; Address calculation too slow. %S = type {i32, [7 x i32] } define i32 @f2(i1 %c1, ptr %p, i64 %i) nounwind "target-features"="+alu-lsl-fast" { ; CHECK-LABEL: f2: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill ; CHECK-NEXT: add x1, x1, x2, lsl #5 ; CHECK-NEXT: tbz w0, #0, .LBB2_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: mov x0, x1 ; CHECK-NEXT: bl use ; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB2_2: // %if.else ; CHECK-NEXT: mov w0, #1 // =0x1 ; CHECK-NEXT: bl use ; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload ; CHECK-NEXT: ret entry: %a = getelementptr %S, ptr %p, i64 %i br i1 %c1, label %if.then, label %if.else if.then: %v0 = call i32 @use(ptr %a) br label %exit if.else: %v1 = call i32 @use(i32 1, ptr %a) br label %exit exit: %v = phi i32 [%v0, %if.then], [%v1, %if.else] ret i32 %v } ; Address calculation cheap enough on some cores. define i32 @f3(i1 %c1, ptr %p, i64 %i) nounwind "target-features"="+alu-lsl-fast,+addr-lsl-fast" { ; CHECK-LABEL: f3: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB3_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill ; CHECK-NEXT: add x0, x1, x2, lsl #2 ; CHECK-NEXT: bl use ; CHECK-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB3_2: // %if.else ; CHECK-NEXT: ldr w0, [x1, x2, lsl #2] ; CHECK-NEXT: ret entry: %a = getelementptr i32, ptr %p, i64 %i br i1 %c1, label %if.then, label %if.else if.then: %v0 = call i32 @use(ptr %a) br label %exit if.else: %v1 = load i32, ptr %a br label %exit exit: %v = phi i32 [%v0, %if.then], [%v1, %if.else] ret i32 %v } define void @f4(ptr %a, i64 %n) nounwind "target-features"="+alu-lsl-fast,+addr-lsl-fast" { ; CHECK-LABEL: f4: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: cmp x1, #1 ; CHECK-NEXT: b.lt .LBB4_9 ; CHECK-NEXT: // %bb.1: // %LI.preheader ; CHECK-NEXT: stp x30, x23, [sp, #-48]! // 16-byte Folded Spill ; CHECK-NEXT: stp x22, x21, [sp, #16] // 16-byte Folded Spill ; CHECK-NEXT: mov x22, xzr ; CHECK-NEXT: stp x20, x19, [sp, #32] // 16-byte Folded Spill ; CHECK-NEXT: mov x19, x1 ; CHECK-NEXT: mov x20, x0 ; CHECK-NEXT: b .LBB4_3 ; CHECK-NEXT: .LBB4_2: // %LI.latch ; CHECK-NEXT: // in Loop: Header=BB4_3 Depth=1 ; CHECK-NEXT: cmp x22, x19 ; CHECK-NEXT: mov x22, x23 ; CHECK-NEXT: b.ge .LBB4_8 ; CHECK-NEXT: .LBB4_3: // %LI ; CHECK-NEXT: // =>This Loop Header: Depth=1 ; CHECK-NEXT: // Child Loop BB4_6 Depth 2 ; CHECK-NEXT: mov x21, xzr ; CHECK-NEXT: add x23, x22, #1 ; CHECK-NEXT: b .LBB4_6 ; CHECK-NEXT: .LBB4_4: // %if.else ; CHECK-NEXT: // in Loop: Header=BB4_6 Depth=2 ; CHECK-NEXT: ldr w0, [x20, x22, lsl #2] ; CHECK-NEXT: .LBB4_5: // %LJ.latch ; CHECK-NEXT: // in Loop: Header=BB4_6 Depth=2 ; CHECK-NEXT: add x8, x21, #1 ; CHECK-NEXT: str w0, [x20, x21, lsl #2] ; CHECK-NEXT: sub x9, x8, #1 ; CHECK-NEXT: mov x21, x8 ; CHECK-NEXT: cmp x9, x19 ; CHECK-NEXT: b.ge .LBB4_2 ; CHECK-NEXT: .LBB4_6: // %LJ ; CHECK-NEXT: // Parent Loop BB4_3 Depth=1 ; CHECK-NEXT: // => This Inner Loop Header: Depth=2 ; CHECK-NEXT: ldr w8, [x20, x21, lsl #2] ; CHECK-NEXT: tbz w8, #31, .LBB4_4 ; CHECK-NEXT: // %bb.7: // %if.then ; CHECK-NEXT: // in Loop: Header=BB4_6 Depth=2 ; CHECK-NEXT: add x0, x20, x22, lsl #2 ; CHECK-NEXT: mov x1, x21 ; CHECK-NEXT: bl use ; CHECK-NEXT: b .LBB4_5 ; CHECK-NEXT: .LBB4_8: ; CHECK-NEXT: ldp x20, x19, [sp, #32] // 16-byte Folded Reload ; CHECK-NEXT: ldp x22, x21, [sp, #16] // 16-byte Folded Reload ; CHECK-NEXT: ldp x30, x23, [sp], #48 // 16-byte Folded Reload ; CHECK-NEXT: .LBB4_9: // %exit ; CHECK-NEXT: ret entry: %c0 = icmp slt i64 %n, 1 br i1 %c0, label %exit, label %LI LI: %i = phi i64 [0, %entry], [%i.next, %LI.latch] %i.next = add i64 %i, 1 %ai.ptr = getelementptr i32, ptr %a, i64 %i br label %LJ LJ: %j = phi i64 [0, %LI], [%j.next, %LJ.latch] %j.next = add i64 %j, 1 %aj.ptr = getelementptr i32, ptr %a, i64 %j %aj = load i32, ptr %aj.ptr %c1 = icmp slt i32 %aj, 0 br i1 %c1, label %if.then, label %if.else if.then: %v = call i32 @use(ptr %ai.ptr, i64 %j) store i32 %v, ptr %aj.ptr br label %LJ.latch if.else: %ai = load i32, ptr %ai.ptr store i32 %ai, ptr %aj.ptr br label %LJ.latch LJ.latch: %c2 = icmp slt i64 %j, %n br i1 %c2, label %LJ, label %LI.latch LI.latch: %c3 = icmp slt i64 %i, %n br i1 %c3, label %LI, label %exit exit: ret void } %T = type { i32, i32, i32 } define void @f5(ptr %a, i32 %n, i32 %k) nounwind { ; CHECK-LABEL: f5: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: cmp w1, #1 ; CHECK-NEXT: b.lt .LBB5_7 ; CHECK-NEXT: // %bb.1: // %L.preheader ; CHECK-NEXT: str x30, [sp, #-48]! // 8-byte Folded Spill ; CHECK-NEXT: mov w8, #12 // =0xc ; CHECK-NEXT: stp x20, x19, [sp, #32] // 16-byte Folded Spill ; CHECK-NEXT: mov w19, w1 ; CHECK-NEXT: smaddl x20, w2, w8, x0 ; CHECK-NEXT: stp x22, x21, [sp, #16] // 16-byte Folded Spill ; CHECK-NEXT: add x21, x0, #8 ; CHECK-NEXT: mov w22, #-1 // =0xffffffff ; CHECK-NEXT: b .LBB5_4 ; CHECK-NEXT: .LBB5_2: // %if.else ; CHECK-NEXT: // in Loop: Header=BB5_4 Depth=1 ; CHECK-NEXT: ldur w0, [x20, #4] ; CHECK-NEXT: .LBB5_3: // %L.latch ; CHECK-NEXT: // in Loop: Header=BB5_4 Depth=1 ; CHECK-NEXT: add w22, w22, #1 ; CHECK-NEXT: str w0, [x21], #12 ; CHECK-NEXT: cmp w22, w19 ; CHECK-NEXT: b.ge .LBB5_6 ; CHECK-NEXT: .LBB5_4: // %L ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 ; CHECK-NEXT: ldr w8, [x21] ; CHECK-NEXT: tbz w8, #31, .LBB5_2 ; CHECK-NEXT: // %bb.5: // %if.then ; CHECK-NEXT: // in Loop: Header=BB5_4 Depth=1 ; CHECK-NEXT: add x0, x20, #4 ; CHECK-NEXT: add w1, w22, #1 ; CHECK-NEXT: bl use ; CHECK-NEXT: b .LBB5_3 ; CHECK-NEXT: .LBB5_6: ; CHECK-NEXT: ldp x20, x19, [sp, #32] // 16-byte Folded Reload ; CHECK-NEXT: ldp x22, x21, [sp, #16] // 16-byte Folded Reload ; CHECK-NEXT: ldr x30, [sp], #48 // 8-byte Folded Reload ; CHECK-NEXT: .LBB5_7: // %exit ; CHECK-NEXT: ret entry: %p = getelementptr %T, ptr %a, i32 %k, i32 1 %c0 = icmp slt i32 %n, 1 br i1 %c0, label %exit, label %L L: %i = phi i32 [0, %entry], [%i.next, %L.latch] %i.next = add i32 %i, 1 %ai.ptr = getelementptr %T, ptr %a, i32 %i, i32 2 %ai = load i32, ptr %ai.ptr %c1 = icmp slt i32 %ai, 0 br i1 %c1, label %if.then, label %if.else if.then: %u.0 = call i32 @use(ptr %p, i32 %i) br label %L.latch if.else: %u.1 = load i32, ptr %p br label %L.latch L.latch: %u = phi i32 [%u.0, %if.then], [%u.1, %if.else] store i32 %u, ptr %ai.ptr %c2 = icmp slt i32 %i, %n br i1 %c2, label %L, label %exit exit: ret void } define i32 @f6(i1 %c, ptr %a, i32 %i) { ; CHECK-LABEL: f6: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: // kill: def $w2 killed $w2 def $x2 ; CHECK-NEXT: tbz w0, #0, .LBB6_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: mov w0, wzr ; CHECK-NEXT: str wzr, [x1, w2, sxtw #2] ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB6_2: // %if.else ; CHECK-NEXT: ldr w0, [x1, w2, sxtw #2] ; CHECK-NEXT: ret entry: %j = sext i32 %i to i64 br i1 %c, label %if.then, label %if.else if.then: %p0 = getelementptr i32, ptr %a, i64 %j store i32 0, ptr %p0 br label %exit if.else: %p1 = getelementptr i32, ptr %a, i64 %j %v0 = load i32, ptr %p1 br label %exit exit: %v = phi i32 [0, %if.then], [%v0, %if.else] ret i32 %v } define i8 @f7(i1 %c, ptr %a, i32 %i) { ; CHECK-LABEL: f7: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB7_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: mov w0, wzr ; CHECK-NEXT: strb wzr, [x1, w2, uxtw] ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB7_2: // %if.else ; CHECK-NEXT: ldrb w0, [x1, w2, uxtw] ; CHECK-NEXT: ret entry: %j = zext i32 %i to i64 br i1 %c, label %if.then, label %if.else if.then: %p0 = getelementptr i8, ptr %a, i64 %j store i8 0, ptr %p0 br label %exit if.else: %p1 = getelementptr i8, ptr %a, i64 %j %v0 = load i8, ptr %p1 br label %exit exit: %v = phi i8 [0, %if.then], [%v0, %if.else] ret i8 %v } define i32 @f8(i1 %c, ptr %a, i32 %i) { ; CHECK-LABEL: f8: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB8_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: mov w0, wzr ; CHECK-NEXT: str wzr, [x1, w2, sxtw #2] ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB8_2: // %if.else ; CHECK-NEXT: ldr w0, [x1, w2, sxtw #2] ; CHECK-NEXT: ret entry: %p = getelementptr i32, ptr %a, i32 %i br i1 %c, label %if.then, label %if.else if.then: store i32 0, ptr %p br label %exit if.else: %v0 = load i32, ptr %p br label %exit exit: %v = phi i32 [0, %if.then], [%v0, %if.else] ret i32 %v } define i64 @f9(i1 %c, ptr %a, i32 %i) { ; CHECK-LABEL: f9: ; CHECK: // %bb.0: // %entry ; CHECK-NEXT: tbz w0, #0, .LBB9_2 ; CHECK-NEXT: // %bb.1: // %if.then ; CHECK-NEXT: mov x0, xzr ; CHECK-NEXT: str xzr, [x1, w2, uxtw #3] ; CHECK-NEXT: ret ; CHECK-NEXT: .LBB9_2: // %if.else ; CHECK-NEXT: ldr x0, [x1, w2, uxtw #3] ; CHECK-NEXT: ret entry: %j = zext i32 %i to i64 %p = getelementptr i64, ptr %a, i64 %j br i1 %c, label %if.then, label %if.else if.then: store i64 0, ptr %p br label %exit if.else: %v0 = load i64, ptr %p br label %exit exit: %v = phi i64 [0, %if.then], [%v0, %if.else] ret i64 %v }