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llvm-project/llvm/test/CodeGen/ARM/usub_sat_plus.ll

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[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=thumbv6m-none-eabi | FileCheck %s --check-prefix=CHECK-T1
; RUN: llc < %s -mtriple=thumbv7m-none-eabi | FileCheck %s --check-prefix=CHECK-T2 --check-prefix=CHECK-T2NODSP
; RUN: llc < %s -mtriple=thumbv7em-none-eabi | FileCheck %s --check-prefix=CHECK-T2 --check-prefix=CHECK-T2DSP
; RUN: llc < %s -mtriple=armv8a-none-eabi | FileCheck %s --check-prefix=CHECK-ARM
declare i4 @llvm.usub.sat.i4(i4, i4)
declare i8 @llvm.usub.sat.i8(i8, i8)
declare i16 @llvm.usub.sat.i16(i16, i16)
declare i32 @llvm.usub.sat.i32(i32, i32)
declare i64 @llvm.usub.sat.i64(i64, i64)
define i32 @func32(i32 %x, i32 %y, i32 %z) nounwind {
; CHECK-T1-LABEL: func32:
; CHECK-T1: @ %bb.0:
; CHECK-T1-NEXT: muls r1, r2, r1
; CHECK-T1-NEXT: subs r0, r0, r1
; CHECK-T1-NEXT: bhs .LBB0_2
; CHECK-T1-NEXT: @ %bb.1:
; CHECK-T1-NEXT: movs r0, #0
; CHECK-T1-NEXT: .LBB0_2:
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: func32:
; CHECK-T2: @ %bb.0:
; CHECK-T2-NEXT: muls r1, r2, r1
; CHECK-T2-NEXT: subs r0, r0, r1
; CHECK-T2-NEXT: it lo
; CHECK-T2-NEXT: movlo r0, #0
; CHECK-T2-NEXT: bx lr
;
; CHECK-ARM-LABEL: func32:
; CHECK-ARM: @ %bb.0:
; CHECK-ARM-NEXT: mul r1, r1, r2
; CHECK-ARM-NEXT: subs r0, r0, r1
; CHECK-ARM-NEXT: movlo r0, #0
; CHECK-ARM-NEXT: bx lr
%a = mul i32 %y, %z
%tmp = call i32 @llvm.usub.sat.i32(i32 %x, i32 %a)
ret i32 %tmp
}
define i64 @func64(i64 %x, i64 %y, i64 %z) nounwind {
; CHECK-T1-LABEL: func64:
; CHECK-T1: @ %bb.0:
; CHECK-T1-NEXT: .save {r4, lr}
; CHECK-T1-NEXT: push {r4, lr}
; CHECK-T1-NEXT: mov r2, r1
; CHECK-T1-NEXT: movs r1, #0
; CHECK-T1-NEXT: ldr r4, [sp, #12]
; CHECK-T1-NEXT: ldr r3, [sp, #8]
; CHECK-T1-NEXT: subs r3, r0, r3
; CHECK-T1-NEXT: sbcs r2, r4
; CHECK-T1-NEXT: mov r0, r1
; CHECK-T1-NEXT: adcs r0, r1
; CHECK-T1-NEXT: movs r4, #1
; CHECK-T1-NEXT: subs r4, r4, r0
; CHECK-T1-NEXT: mov r0, r1
; CHECK-T1-NEXT: beq .LBB1_3
; CHECK-T1-NEXT: @ %bb.1:
; CHECK-T1-NEXT: cmp r4, #0
; CHECK-T1-NEXT: beq .LBB1_4
; CHECK-T1-NEXT: .LBB1_2:
; CHECK-T1-NEXT: pop {r4, pc}
; CHECK-T1-NEXT: .LBB1_3:
; CHECK-T1-NEXT: mov r0, r3
; CHECK-T1-NEXT: cmp r4, #0
; CHECK-T1-NEXT: bne .LBB1_2
; CHECK-T1-NEXT: .LBB1_4:
; CHECK-T1-NEXT: mov r1, r2
; CHECK-T1-NEXT: pop {r4, pc}
;
; CHECK-T2-LABEL: func64:
; CHECK-T2: @ %bb.0:
; CHECK-T2-NEXT: ldrd r2, r3, [sp]
; CHECK-T2-NEXT: mov.w r12, #0
; CHECK-T2-NEXT: subs r0, r0, r2
; CHECK-T2-NEXT: sbcs r1, r3
; CHECK-T2-NEXT: adc r2, r12, #0
; CHECK-T2-NEXT: rsbs.w r2, r2, #1
; CHECK-T2-NEXT: itt ne
; CHECK-T2-NEXT: movne r0, #0
; CHECK-T2-NEXT: movne r1, #0
; CHECK-T2-NEXT: bx lr
;
; CHECK-ARM-LABEL: func64:
; CHECK-ARM: @ %bb.0:
; CHECK-ARM-NEXT: ldr r2, [sp]
; CHECK-ARM-NEXT: mov r12, #0
; CHECK-ARM-NEXT: ldr r3, [sp, #4]
; CHECK-ARM-NEXT: subs r0, r0, r2
; CHECK-ARM-NEXT: sbcs r1, r1, r3
; CHECK-ARM-NEXT: adc r2, r12, #0
; CHECK-ARM-NEXT: rsbs r2, r2, #1
; CHECK-ARM-NEXT: movwne r0, #0
; CHECK-ARM-NEXT: movwne r1, #0
; CHECK-ARM-NEXT: bx lr
%a = mul i64 %y, %z
%tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %z)
ret i64 %tmp
}
define zeroext i16 @func16(i16 zeroext %x, i16 zeroext %y, i16 zeroext %z) nounwind {
; CHECK-T1-LABEL: func16:
; CHECK-T1: @ %bb.0:
; CHECK-T1-NEXT: muls r1, r2, r1
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: uxth r2, r1
; CHECK-T1-NEXT: cmp r0, r2
; CHECK-T1-NEXT: bhi .LBB2_2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: @ %bb.1:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: mov r0, r2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: .LBB2_2:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: subs r0, r0, r1
; CHECK-T1-NEXT: uxth r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: func16:
; CHECK-T2: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T2-NEXT: mul r3, r1, r2
; CHECK-T2-NEXT: uxth r3, r3
; CHECK-T2-NEXT: cmp r0, r3
; CHECK-T2-NEXT: it hi
; CHECK-T2-NEXT: movhi r3, r0
; CHECK-T2-NEXT: mls r0, r1, r2, r3
; CHECK-T2-NEXT: uxth r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T2-NEXT: bx lr
;
; CHECK-ARM-LABEL: func16:
; CHECK-ARM: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-ARM-NEXT: mul r3, r1, r2
; CHECK-ARM-NEXT: uxth r3, r3
; CHECK-ARM-NEXT: cmp r0, r3
; CHECK-ARM-NEXT: movhi r3, r0
; CHECK-ARM-NEXT: mls r0, r1, r2, r3
; CHECK-ARM-NEXT: uxth r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-ARM-NEXT: bx lr
%a = mul i16 %y, %z
%tmp = call i16 @llvm.usub.sat.i16(i16 %x, i16 %a)
ret i16 %tmp
}
define zeroext i8 @func8(i8 zeroext %x, i8 zeroext %y, i8 zeroext %z) nounwind {
; CHECK-T1-LABEL: func8:
; CHECK-T1: @ %bb.0:
; CHECK-T1-NEXT: muls r1, r2, r1
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: uxtb r2, r1
; CHECK-T1-NEXT: cmp r0, r2
; CHECK-T1-NEXT: bhi .LBB3_2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: @ %bb.1:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: mov r0, r2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: .LBB3_2:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: subs r0, r0, r1
; CHECK-T1-NEXT: uxtb r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: func8:
; CHECK-T2: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T2-NEXT: mul r3, r1, r2
; CHECK-T2-NEXT: uxtb r3, r3
; CHECK-T2-NEXT: cmp r0, r3
; CHECK-T2-NEXT: it hi
; CHECK-T2-NEXT: movhi r3, r0
; CHECK-T2-NEXT: mls r0, r1, r2, r3
; CHECK-T2-NEXT: uxtb r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T2-NEXT: bx lr
;
; CHECK-ARM-LABEL: func8:
; CHECK-ARM: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-ARM-NEXT: smulbb r3, r1, r2
; CHECK-ARM-NEXT: uxtb r3, r3
; CHECK-ARM-NEXT: cmp r0, r3
; CHECK-ARM-NEXT: movhi r3, r0
; CHECK-ARM-NEXT: mls r0, r1, r2, r3
; CHECK-ARM-NEXT: uxtb r0, r0
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-ARM-NEXT: bx lr
%a = mul i8 %y, %z
%tmp = call i8 @llvm.usub.sat.i8(i8 %x, i8 %a)
ret i8 %tmp
}
define zeroext i4 @func4(i4 zeroext %x, i4 zeroext %y, i4 zeroext %z) nounwind {
; CHECK-T1-LABEL: func4:
; CHECK-T1: @ %bb.0:
; CHECK-T1-NEXT: muls r1, r2, r1
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: movs r2, #15
; CHECK-T1-NEXT: mov r3, r1
; CHECK-T1-NEXT: ands r3, r2
; CHECK-T1-NEXT: cmp r0, r3
; CHECK-T1-NEXT: bhi .LBB4_2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: @ %bb.1:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: mov r0, r3
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: .LBB4_2:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T1-NEXT: subs r0, r0, r1
; CHECK-T1-NEXT: ands r0, r2
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: func4:
; CHECK-T2: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-T2-NEXT: mul r3, r1, r2
; CHECK-T2-NEXT: and r3, r3, #15
; CHECK-T2-NEXT: cmp r0, r3
; CHECK-T2-NEXT: it hi
; CHECK-T2-NEXT: movhi r3, r0
; CHECK-T2-NEXT: mls r0, r1, r2, r3
; CHECK-T2-NEXT: and r0, r0, #15
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-T2-NEXT: bx lr
;
; CHECK-ARM-LABEL: func4:
; CHECK-ARM: @ %bb.0:
[Codegen] Alter the default promotion for saturating adds and subs The default promotion for the add_sat/sub_sat nodes currently does: ANY_EXTEND iN to iM SHL by M-N [US][ADD|SUB]SAT L/ASHR by M-N If the promoted add_sat or sub_sat node is not legal, this can produce code that effectively does a lot of shifting (and requiring large constants to be materialised) just to use the overflow flag. It is simpler to just do the saturation manually, using the higher bitwidth addition and a min/max against the saturating bounds. That is what this patch attempts to do. Differential Revision: https://reviews.llvm.org/D68926 llvm-svn: 375211
2019-10-18 17:47:48 +08:00
; CHECK-ARM-NEXT: smulbb r3, r1, r2
; CHECK-ARM-NEXT: and r3, r3, #15
; CHECK-ARM-NEXT: cmp r0, r3
; CHECK-ARM-NEXT: movhi r3, r0
; CHECK-ARM-NEXT: mls r0, r1, r2, r3
; CHECK-ARM-NEXT: and r0, r0, #15
[Codegen] Adjust saturation test. NFC. Add some extra sat tests and adjust some of the existing tests to use signext where it would naturally be. llvm-svn: 375009
2019-10-16 23:50:42 +08:00
; CHECK-ARM-NEXT: bx lr
%a = mul i4 %y, %z
%tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %a)
ret i4 %tmp
}