7d14733c12
Generate s_absdiff_i32. Tested in absdiff.ll. Also update s_cmp_0.ll to test that s_absdiff_i32 is foldable with a s_cmp_lg_u32 sX, 0. --------- Signed-off-by: John Lu <John.Lu@amd.com>
105 lines
3.9 KiB
LLVM
105 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -mtriple=amdgcn-amd-amdpal -mcpu=gfx900 < %s | FileCheck %s
|
|
|
|
define amdgpu_ps i16 @absdiff_i16_false(i16 inreg %arg0, i16 inreg %arg1) {
|
|
; CHECK-LABEL: absdiff_i16_false:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_sub_i32 s0, s0, s1
|
|
; CHECK-NEXT: s_sext_i32_i16 s1, s0
|
|
; CHECK-NEXT: s_sub_i32 s0, 0, s0
|
|
; CHECK-NEXT: s_sext_i32_i16 s0, s0
|
|
; CHECK-NEXT: s_max_i32 s0, s1, s0
|
|
; CHECK-NEXT: ; return to shader part epilog
|
|
%diff = sub i16 %arg0, %arg1
|
|
%res = call i16 @llvm.abs.i16(i16 %diff, i1 false) ; INT_MIN input returns INT_MIN
|
|
ret i16 %res
|
|
}
|
|
|
|
define amdgpu_ps i16 @absdiff_i16_true(i16 inreg %arg0, i16 inreg %arg1) {
|
|
; CHECK-LABEL: absdiff_i16_true:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_sub_i32 s0, s0, s1
|
|
; CHECK-NEXT: s_sext_i32_i16 s1, s0
|
|
; CHECK-NEXT: s_sub_i32 s0, 0, s0
|
|
; CHECK-NEXT: s_sext_i32_i16 s0, s0
|
|
; CHECK-NEXT: s_max_i32 s0, s1, s0
|
|
; CHECK-NEXT: ; return to shader part epilog
|
|
%diff = sub i16 %arg0, %arg1
|
|
%res = call i16 @llvm.abs.i16(i16 %diff, i1 true) ; INT_MIN input returns poison
|
|
ret i16 %res
|
|
}
|
|
|
|
define amdgpu_ps i32 @absdiff_i32_false(i32 inreg %arg0, i32 inreg %arg1) {
|
|
; CHECK-LABEL: absdiff_i32_false:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_absdiff_i32 s0, s0, s1
|
|
; CHECK-NEXT: ; return to shader part epilog
|
|
%diff = sub i32 %arg0, %arg1
|
|
%res = call i32 @llvm.abs.i32(i32 %diff, i1 false) ; INT_MIN input returns INT_MIN
|
|
ret i32 %res
|
|
}
|
|
|
|
define amdgpu_ps i32 @absdiff_i32_true(i32 inreg %arg0, i32 inreg %arg1) {
|
|
; CHECK-LABEL: absdiff_i32_true:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_absdiff_i32 s0, s0, s1
|
|
; CHECK-NEXT: ; return to shader part epilog
|
|
%diff = sub i32 %arg0, %arg1
|
|
%res = call i32 @llvm.abs.i32(i32 %diff, i1 true) ; INT_MIN input returns poison
|
|
ret i32 %res
|
|
}
|
|
|
|
; Multiple uses of %diff. No benefit for using s_absdiff_i32.
|
|
define amdgpu_ps i32 @absdiff_i32_false_multi_use(i32 inreg %arg0, i32 inreg %arg1) {
|
|
; CHECK-LABEL: absdiff_i32_false_multi_use:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_sub_i32 s1, s0, s1
|
|
; CHECK-NEXT: s_abs_i32 s0, s1
|
|
; CHECK-NEXT: ;;#ASMSTART
|
|
; CHECK-NEXT: ; use s1
|
|
; CHECK-NEXT: ;;#ASMEND
|
|
; CHECK-NEXT: ; return to shader part epilog
|
|
%diff = sub i32 %arg0, %arg1
|
|
%res = call i32 @llvm.abs.i32(i32 %diff, i1 false) ; INT_MIN input returns INT_MIN
|
|
call void asm "; use $0", "s"(i32 %diff)
|
|
ret i32 %res
|
|
}
|
|
|
|
define <2 x i32> @absdiff_2xi32_false(<2 x i32> %arg0, <2 x i32> %arg1) {
|
|
; CHECK-LABEL: absdiff_2xi32_false:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
|
|
; CHECK-NEXT: v_sub_u32_e32 v0, v0, v2
|
|
; CHECK-NEXT: v_sub_u32_e32 v1, v1, v3
|
|
; CHECK-NEXT: v_sub_u32_e32 v2, 0, v0
|
|
; CHECK-NEXT: v_max_i32_e32 v0, v2, v0
|
|
; CHECK-NEXT: v_sub_u32_e32 v2, 0, v1
|
|
; CHECK-NEXT: v_max_i32_e32 v1, v2, v1
|
|
; CHECK-NEXT: s_setpc_b64 s[30:31]
|
|
%diff = sub <2 x i32> %arg0, %arg1
|
|
%res = call <2 x i32> @llvm.abs.v2i32(<2 x i32> %diff, i1 false) ; INT_MIN input returns INT_MIN
|
|
ret <2 x i32> %res
|
|
}
|
|
|
|
define <4 x i32> @absdiff_4xi32_false(<4 x i32> %arg0, <4 x i32> %arg1) {
|
|
; CHECK-LABEL: absdiff_4xi32_false:
|
|
; CHECK: ; %bb.0:
|
|
; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
|
|
; CHECK-NEXT: v_sub_u32_e32 v0, v0, v4
|
|
; CHECK-NEXT: v_sub_u32_e32 v1, v1, v5
|
|
; CHECK-NEXT: v_sub_u32_e32 v4, 0, v0
|
|
; CHECK-NEXT: v_sub_u32_e32 v2, v2, v6
|
|
; CHECK-NEXT: v_max_i32_e32 v0, v4, v0
|
|
; CHECK-NEXT: v_sub_u32_e32 v4, 0, v1
|
|
; CHECK-NEXT: v_sub_u32_e32 v3, v3, v7
|
|
; CHECK-NEXT: v_max_i32_e32 v1, v4, v1
|
|
; CHECK-NEXT: v_sub_u32_e32 v4, 0, v2
|
|
; CHECK-NEXT: v_max_i32_e32 v2, v4, v2
|
|
; CHECK-NEXT: v_sub_u32_e32 v4, 0, v3
|
|
; CHECK-NEXT: v_max_i32_e32 v3, v4, v3
|
|
; CHECK-NEXT: s_setpc_b64 s[30:31]
|
|
%diff = sub <4 x i32> %arg0, %arg1
|
|
%res = call <4 x i32> @llvm.abs.v4i32(<4 x i32> %diff, i1 false) ; INT_MIN input returns INT_MIN
|
|
ret <4 x i32> %res
|
|
}
|