124 lines
4.1 KiB
LLVM
124 lines
4.1 KiB
LLVM
; Check that various LLVM idioms get lowered to NVPTX as expected.
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; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
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; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s
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; RUN: %if ptxas && !ptxas-12.0 %{ llc < %s -march=nvptx -mcpu=sm_20 | %ptxas-verify %}
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; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_20 | %ptxas-verify %}
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%struct.S16 = type { i16, i16 }
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%struct.S32 = type { i32, i32 }
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; CHECK-LABEL: abs_i16(
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define i16 @abs_i16(i16 %a) {
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; CHECK: abs.s16
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%neg = sub i16 0, %a
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%abs.cond = icmp sge i16 %a, 0
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%abs = select i1 %abs.cond, i16 %a, i16 %neg
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ret i16 %abs
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}
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; CHECK-LABEL: abs_i32(
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define i32 @abs_i32(i32 %a) {
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; CHECK: abs.s32
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%neg = sub i32 0, %a
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%abs.cond = icmp sge i32 %a, 0
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%abs = select i1 %abs.cond, i32 %a, i32 %neg
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ret i32 %abs
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}
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; CHECK-LABEL: abs_i64(
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define i64 @abs_i64(i64 %a) {
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; CHECK: abs.s64
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%neg = sub i64 0, %a
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%abs.cond = icmp sge i64 %a, 0
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%abs = select i1 %abs.cond, i64 %a, i64 %neg
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ret i64 %abs
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}
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; CHECK-LABEL: i32_to_2xi16(
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define %struct.S16 @i32_to_2xi16(i32 noundef %in) {
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%low = trunc i32 %in to i16
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%high32 = lshr i32 %in, 16
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%high = trunc i32 %high32 to i16
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; CHECK: ld.param.u32 %[[R32:r[0-9]+]], [i32_to_2xi16_param_0];
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; CHECK-DAG: cvt.u16.u32 %rs{{[0-9+]}}, %[[R32]];
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; CHECK-DAG mov.b32 {tmp, %rs{{[0-9+]}}}, %[[R32]];
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%s1 = insertvalue %struct.S16 poison, i16 %low, 0
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%s = insertvalue %struct.S16 %s1, i16 %high, 1
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ret %struct.S16 %s
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}
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; CHECK-LABEL: i32_to_2xi16_lh(
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; Same as above, but with rearranged order of low/high parts.
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define %struct.S16 @i32_to_2xi16_lh(i32 noundef %in) {
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%high32 = lshr i32 %in, 16
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%high = trunc i32 %high32 to i16
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%low = trunc i32 %in to i16
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; CHECK: ld.param.u32 %[[R32:r[0-9]+]], [i32_to_2xi16_lh_param_0];
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; CHECK-DAG: cvt.u16.u32 %rs{{[0-9+]}}, %[[R32]];
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; CHECK-DAG mov.b32 {tmp, %rs{{[0-9+]}}}, %[[R32]];
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%s1 = insertvalue %struct.S16 poison, i16 %low, 0
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%s = insertvalue %struct.S16 %s1, i16 %high, 1
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ret %struct.S16 %s
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}
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; CHECK-LABEL: i32_to_2xi16_not(
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define %struct.S16 @i32_to_2xi16_not(i32 noundef %in) {
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%low = trunc i32 %in to i16
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; Shift by any value other than 16 blocks the conversiopn to mov.
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%high32 = lshr i32 %in, 15
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%high = trunc i32 %high32 to i16
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; CHECK: cvt.u16.u32
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; CHECK: shr.u32
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; CHECK: cvt.u16.u32
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%s1 = insertvalue %struct.S16 poison, i16 %low, 0
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%s = insertvalue %struct.S16 %s1, i16 %high, 1
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ret %struct.S16 %s
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}
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; CHECK-LABEL: i64_to_2xi32(
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define %struct.S32 @i64_to_2xi32(i64 noundef %in) {
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%low = trunc i64 %in to i32
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%high64 = lshr i64 %in, 32
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%high = trunc i64 %high64 to i32
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; CHECK: ld.param.u64 %[[R64:rd[0-9]+]], [i64_to_2xi32_param_0];
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; CHECK-DAG: cvt.u32.u64 %r{{[0-9+]}}, %[[R64]];
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; CHECK-DAG mov.b64 {tmp, %r{{[0-9+]}}}, %[[R64]];
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%s1 = insertvalue %struct.S32 poison, i32 %low, 0
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%s = insertvalue %struct.S32 %s1, i32 %high, 1
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ret %struct.S32 %s
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}
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; CHECK-LABEL: i64_to_2xi32_not(
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define %struct.S32 @i64_to_2xi32_not(i64 noundef %in) {
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%low = trunc i64 %in to i32
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; Shift by any value other than 32 blocks the conversiopn to mov.
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%high64 = lshr i64 %in, 31
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%high = trunc i64 %high64 to i32
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; CHECK: cvt.u32.u64
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; CHECK: shr.u64
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; CHECK: cvt.u32.u64
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%s1 = insertvalue %struct.S32 poison, i32 %low, 0
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%s = insertvalue %struct.S32 %s1, i32 %high, 1
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ret %struct.S32 %s
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}
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; CHECK-LABEL: i32_to_2xi16_shr(
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; Make sure we do not get confused when our input itself is [al]shr.
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define %struct.S16 @i32_to_2xi16_shr(i32 noundef %i){
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call void @escape_int(i32 %i); // Force %i to be loaded completely.
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%i1 = ashr i32 %i, 16
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%l = trunc i32 %i1 to i16
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%h32 = ashr i32 %i1, 16
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%h = trunc i32 %h32 to i16
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; CHECK: ld.param.u32 %[[R32:r[0-9]+]], [i32_to_2xi16_shr_param_0];
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; CHECK: shr.s32 %[[R32H:r[0-9]+]], %[[R32]], 16;
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; CHECK-DAG mov.b32 {tmp, %rs{{[0-9+]}}}, %[[R32]];
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; CHECK-DAG mov.b32 {tmp, %rs{{[0-9+]}}}, %[[R32H]];
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%s0 = insertvalue %struct.S16 poison, i16 %l, 0
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%s1 = insertvalue %struct.S16 %s0, i16 %h, 1
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ret %struct.S16 %s1
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}
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declare dso_local void @escape_int(i32 noundef)
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