Pre-commit test (NFC)

Author: AZero13

llvm/test/CodeGen/ARM/min-max-combine.ll

@@ -0,0 +1,168 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=armv7a < %s | FileCheck %s --check-prefix=ARM
+; RUN: llc -mtriple=armv6m < %s | FileCheck %s --check-prefix=THUMB
+; RUN: llc -mtriple=armv7m < %s | FileCheck %s --check-prefix=THUMB2
+
+declare i8 @llvm.smax.i8(i8 %a, i8 %b) readnone
+
+define i8 @smaxi8_zero(i8 %a) {
+; ARM-LABEL: smaxi8_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    sxtb r0, r0
+; ARM-NEXT:    bic r0, r0, r0, asr #31
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smaxi8_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    sxtb r0, r0
+; THUMB-NEXT:    asrs r1, r0, #31
+; THUMB-NEXT:    bics r0, r1
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smaxi8_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    sxtb r0, r0
+; THUMB2-NEXT:    bic.w r0, r0, r0, asr #31
+; THUMB2-NEXT:    bx lr
+  %c = call i8 @llvm.smax.i8(i8 %a, i8 0)
+  ret i8 %c
+}
+
+declare i16 @llvm.smax.i16(i16 %a, i16 %b) readnone
+
+define i16 @smaxi16_zero(i16 %a) {
+; ARM-LABEL: smaxi16_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    sxth r0, r0
+; ARM-NEXT:    bic r0, r0, r0, asr #31
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smaxi16_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    sxth r0, r0
+; THUMB-NEXT:    asrs r1, r0, #31
+; THUMB-NEXT:    bics r0, r1
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smaxi16_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    sxth r0, r0
+; THUMB2-NEXT:    bic.w r0, r0, r0, asr #31
+; THUMB2-NEXT:    bx lr
+  %c = call i16 @llvm.smax.i16(i16 %a, i16 0)
+  ret i16 %c
+}
+
+declare i32 @llvm.smax.i32(i32 %a, i32 %b) readnone
+
+define i32 @smaxi32_zero(i32 %a) {
+; ARM-LABEL: smaxi32_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    bic r0, r0, r0, asr #31
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smaxi32_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    asrs r1, r0, #31
+; THUMB-NEXT:    bics r0, r1
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smaxi32_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    bic.w r0, r0, r0, asr #31
+; THUMB2-NEXT:    bx lr
+  %c = call i32 @llvm.smax.i32(i32 %a, i32 0)
+  ret i32 %c
+}
+
+; SMIN
+
+declare i8 @llvm.smin.i8(i8 %a, i8 %b) readnone
+
+define i8 @smini8_zero(i8 %a) {
+; ARM-LABEL: smini8_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    sxtb r0, r0
+; ARM-NEXT:    cmp r0, #0
+; ARM-NEXT:    movpl r0, #0
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smini8_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    sxtb r0, r0
+; THUMB-NEXT:    cmp r0, #0
+; THUMB-NEXT:    bmi .LBB3_2
+; THUMB-NEXT:  @ %bb.1:
+; THUMB-NEXT:    movs r0, #0
+; THUMB-NEXT:  .LBB3_2:
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smini8_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    sxtb r0, r0
+; THUMB2-NEXT:    cmp r0, #0
+; THUMB2-NEXT:    it pl
+; THUMB2-NEXT:    movpl r0, #0
+; THUMB2-NEXT:    bx lr
+  %c = call i8 @llvm.smin.i8(i8 %a, i8 0)
+  ret i8 %c
+}
+
+declare i16 @llvm.smin.i16(i16 %a, i16 %b) readnone
+
+define i16 @smini16_zero(i16 %a) {
+; ARM-LABEL: smini16_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    sxth r0, r0
+; ARM-NEXT:    cmp r0, #0
+; ARM-NEXT:    movpl r0, #0
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smini16_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    sxth r0, r0
+; THUMB-NEXT:    cmp r0, #0
+; THUMB-NEXT:    bmi .LBB4_2
+; THUMB-NEXT:  @ %bb.1:
+; THUMB-NEXT:    movs r0, #0
+; THUMB-NEXT:  .LBB4_2:
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smini16_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    sxth r0, r0
+; THUMB2-NEXT:    cmp r0, #0
+; THUMB2-NEXT:    it pl
+; THUMB2-NEXT:    movpl r0, #0
+; THUMB2-NEXT:    bx lr
+  %c = call i16 @llvm.smin.i16(i16 %a, i16 0)
+  ret i16 %c
+}
+
+declare i32 @llvm.smin.i32(i32 %a, i32 %b) readnone
+
+define i32 @smini32_zero(i32 %a) {
+; ARM-LABEL: smini32_zero:
+; ARM:       @ %bb.0:
+; ARM-NEXT:    cmp r0, #0
+; ARM-NEXT:    movpl r0, #0
+; ARM-NEXT:    bx lr
+;
+; THUMB-LABEL: smini32_zero:
+; THUMB:       @ %bb.0:
+; THUMB-NEXT:    cmp r0, #0
+; THUMB-NEXT:    bmi .LBB5_2
+; THUMB-NEXT:  @ %bb.1:
+; THUMB-NEXT:    movs r0, #0
+; THUMB-NEXT:  .LBB5_2:
+; THUMB-NEXT:    bx lr
+;
+; THUMB2-LABEL: smini32_zero:
+; THUMB2:       @ %bb.0:
+; THUMB2-NEXT:    cmp r0, #0
+; THUMB2-NEXT:    it pl
+; THUMB2-NEXT:    movpl r0, #0
+; THUMB2-NEXT:    bx lr
+  %c = call i32 @llvm.smin.i32(i32 %a, i32 0)
+  ret i32 %c
+}