| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 | FileCheck %s |
| ; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 -mattr=+neon | FileCheck %s |
| ; RUN: llc < %s -mtriple thumbv6m-none-eabi | FileCheck %s --check-prefix=CHECK-THUMB |
| |
| ; This test checks the @llvm.cttz.* intrinsics for integers. |
| |
| declare i8 @llvm.cttz.i8(i8, i1) |
| declare i16 @llvm.cttz.i16(i16, i1) |
| declare i32 @llvm.cttz.i32(i32, i1) |
| declare i64 @llvm.cttz.i64(i64, i1) |
| |
| ;------------------------------------------------------------------------------ |
| |
| define i8 @test_i8(i8 %a) { |
| ; CHECK-LABEL: test_i8: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: orr r0, r0, #256 |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i8: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: lsls r1, r0, #24 |
| ; CHECK-THUMB-NEXT: beq .LBB0_2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: @ %cond.false |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI0_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI0_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI0_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI0_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .LBB0_2: |
| ; CHECK-THUMB-NEXT: movs r0, #8 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.3: |
| ; CHECK-THUMB-NEXT: .LCPI0_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI0_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI0_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI0_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 false) |
| ret i8 %tmp |
| } |
| |
| define i16 @test_i16(i16 %a) { |
| ; CHECK-LABEL: test_i16: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: orr r0, r0, #65536 |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i16: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: lsls r1, r0, #16 |
| ; CHECK-THUMB-NEXT: beq .LBB1_2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: @ %cond.false |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI1_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI1_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI1_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI1_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .LBB1_2: |
| ; CHECK-THUMB-NEXT: movs r0, #16 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.3: |
| ; CHECK-THUMB-NEXT: .LCPI1_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI1_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI1_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI1_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 false) |
| ret i16 %tmp |
| } |
| |
| define i32 @test_i32(i32 %a) { |
| ; CHECK-LABEL: test_i32: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i32: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: cmp r0, #0 |
| ; CHECK-THUMB-NEXT: beq .LBB2_2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: @ %cond.false |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI2_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI2_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI2_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI2_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .LBB2_2: |
| ; CHECK-THUMB-NEXT: movs r0, #32 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.3: |
| ; CHECK-THUMB-NEXT: .LCPI2_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI2_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI2_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI2_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 false) |
| ret i32 %tmp |
| } |
| |
| define i64 @test_i64(i64 %a) { |
| ; CHECK-LABEL: test_i64: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r1, r1 |
| ; CHECK-NEXT: rbit r2, r0 |
| ; CHECK-NEXT: clz r1, r1 |
| ; CHECK-NEXT: cmp r0, #0 |
| ; CHECK-NEXT: add r1, r1, #32 |
| ; CHECK-NEXT: clzne r1, r2 |
| ; CHECK-NEXT: mov r0, r1 |
| ; CHECK-NEXT: mov r1, #0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i64: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: .save {r4, r5, r7, lr} |
| ; CHECK-THUMB-NEXT: push {r4, r5, r7, lr} |
| ; CHECK-THUMB-NEXT: ldr r5, .LCPI3_0 |
| ; CHECK-THUMB-NEXT: ldr r4, .LCPI3_1 |
| ; CHECK-THUMB-NEXT: ldr r3, .LCPI3_2 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI3_3 |
| ; CHECK-THUMB-NEXT: cmp r0, #0 |
| ; CHECK-THUMB-NEXT: bne .LBB3_2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: |
| ; CHECK-THUMB-NEXT: subs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: bics r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: ands r1, r5 |
| ; CHECK-THUMB-NEXT: subs r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r4 |
| ; CHECK-THUMB-NEXT: ands r1, r4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ands r0, r3 |
| ; CHECK-THUMB-NEXT: muls r2, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r0, r2, #24 |
| ; CHECK-THUMB-NEXT: adds r0, #32 |
| ; CHECK-THUMB-NEXT: movs r1, #0 |
| ; CHECK-THUMB-NEXT: pop {r4, r5, r7, pc} |
| ; CHECK-THUMB-NEXT: .LBB3_2: |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ands r0, r5 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r4 |
| ; CHECK-THUMB-NEXT: ands r1, r4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ands r0, r3 |
| ; CHECK-THUMB-NEXT: muls r2, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r0, r2, #24 |
| ; CHECK-THUMB-NEXT: movs r1, #0 |
| ; CHECK-THUMB-NEXT: pop {r4, r5, r7, pc} |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.3: |
| ; CHECK-THUMB-NEXT: .LCPI3_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI3_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI3_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI3_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 false) |
| ret i64 %tmp |
| } |
| |
| ;------------------------------------------------------------------------------ |
| |
| define i8 @test_i8_zero_undef(i8 %a) { |
| ; CHECK-LABEL: test_i8_zero_undef: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i8_zero_undef: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI4_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI4_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI4_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI4_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: |
| ; CHECK-THUMB-NEXT: .LCPI4_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI4_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI4_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI4_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 true) |
| ret i8 %tmp |
| } |
| |
| define i16 @test_i16_zero_undef(i16 %a) { |
| ; CHECK-LABEL: test_i16_zero_undef: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i16_zero_undef: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI5_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI5_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI5_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI5_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: |
| ; CHECK-THUMB-NEXT: .LCPI5_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI5_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI5_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI5_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 true) |
| ret i16 %tmp |
| } |
| |
| |
| define i32 @test_i32_zero_undef(i32 %a) { |
| ; CHECK-LABEL: test_i32_zero_undef: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r0, r0 |
| ; CHECK-NEXT: clz r0, r0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i32_zero_undef: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI6_0 |
| ; CHECK-THUMB-NEXT: ands r2, r0 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r2 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI6_1 |
| ; CHECK-THUMB-NEXT: lsrs r2, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r1 |
| ; CHECK-THUMB-NEXT: ands r2, r1 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ldr r1, .LCPI6_2 |
| ; CHECK-THUMB-NEXT: ands r1, r0 |
| ; CHECK-THUMB-NEXT: ldr r0, .LCPI6_3 |
| ; CHECK-THUMB-NEXT: muls r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r0, #24 |
| ; CHECK-THUMB-NEXT: bx lr |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: |
| ; CHECK-THUMB-NEXT: .LCPI6_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI6_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI6_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI6_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 true) |
| ret i32 %tmp |
| } |
| |
| define i64 @test_i64_zero_undef(i64 %a) { |
| ; CHECK-LABEL: test_i64_zero_undef: |
| ; CHECK: @ %bb.0: |
| ; CHECK-NEXT: rbit r1, r1 |
| ; CHECK-NEXT: rbit r2, r0 |
| ; CHECK-NEXT: clz r1, r1 |
| ; CHECK-NEXT: cmp r0, #0 |
| ; CHECK-NEXT: add r1, r1, #32 |
| ; CHECK-NEXT: clzne r1, r2 |
| ; CHECK-NEXT: mov r0, r1 |
| ; CHECK-NEXT: mov r1, #0 |
| ; CHECK-NEXT: bx lr |
| ; |
| ; CHECK-THUMB-LABEL: test_i64_zero_undef: |
| ; CHECK-THUMB: @ %bb.0: |
| ; CHECK-THUMB-NEXT: .save {r4, r5, r7, lr} |
| ; CHECK-THUMB-NEXT: push {r4, r5, r7, lr} |
| ; CHECK-THUMB-NEXT: ldr r5, .LCPI7_0 |
| ; CHECK-THUMB-NEXT: ldr r4, .LCPI7_1 |
| ; CHECK-THUMB-NEXT: ldr r3, .LCPI7_2 |
| ; CHECK-THUMB-NEXT: ldr r2, .LCPI7_3 |
| ; CHECK-THUMB-NEXT: cmp r0, #0 |
| ; CHECK-THUMB-NEXT: bne .LBB7_2 |
| ; CHECK-THUMB-NEXT: @ %bb.1: |
| ; CHECK-THUMB-NEXT: subs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: bics r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: ands r1, r5 |
| ; CHECK-THUMB-NEXT: subs r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r4 |
| ; CHECK-THUMB-NEXT: ands r1, r4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ands r0, r3 |
| ; CHECK-THUMB-NEXT: muls r2, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r0, r2, #24 |
| ; CHECK-THUMB-NEXT: adds r0, #32 |
| ; CHECK-THUMB-NEXT: movs r1, #0 |
| ; CHECK-THUMB-NEXT: pop {r4, r5, r7, pc} |
| ; CHECK-THUMB-NEXT: .LBB7_2: |
| ; CHECK-THUMB-NEXT: subs r1, r0, #1 |
| ; CHECK-THUMB-NEXT: bics r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r0, r1, #1 |
| ; CHECK-THUMB-NEXT: ands r0, r5 |
| ; CHECK-THUMB-NEXT: subs r0, r1, r0 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #2 |
| ; CHECK-THUMB-NEXT: ands r0, r4 |
| ; CHECK-THUMB-NEXT: ands r1, r4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: lsrs r1, r0, #4 |
| ; CHECK-THUMB-NEXT: adds r0, r0, r1 |
| ; CHECK-THUMB-NEXT: ands r0, r3 |
| ; CHECK-THUMB-NEXT: muls r2, r0, r2 |
| ; CHECK-THUMB-NEXT: lsrs r0, r2, #24 |
| ; CHECK-THUMB-NEXT: movs r1, #0 |
| ; CHECK-THUMB-NEXT: pop {r4, r5, r7, pc} |
| ; CHECK-THUMB-NEXT: .p2align 2 |
| ; CHECK-THUMB-NEXT: @ %bb.3: |
| ; CHECK-THUMB-NEXT: .LCPI7_0: |
| ; CHECK-THUMB-NEXT: .long 1431655765 @ 0x55555555 |
| ; CHECK-THUMB-NEXT: .LCPI7_1: |
| ; CHECK-THUMB-NEXT: .long 858993459 @ 0x33333333 |
| ; CHECK-THUMB-NEXT: .LCPI7_2: |
| ; CHECK-THUMB-NEXT: .long 252645135 @ 0xf0f0f0f |
| ; CHECK-THUMB-NEXT: .LCPI7_3: |
| ; CHECK-THUMB-NEXT: .long 16843009 @ 0x1010101 |
| %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 true) |
| ret i64 %tmp |
| } |
