[llvm] [NVPTX] Fix ISel patterns for i1 sint_to_fp (PR #110866)

[Lewis Crawford via llvm-commits]

================
@@ -2,37 +2,55 @@
 ; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_20 | %ptxas-verify %}
 
 ; CHECK-LABEL: foo
-; CHECK: setp
-; CHECK: selp
-; CHECK: cvt.rn.f32.u32
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.u32 %[[R:r[0-9]+]], 1, 0, %[[P]];
+; CHECK: cvt.rn.f32.u32 %f{{.*}}, %[[R]]
 define float @foo(i1 %a) {
   %ret = uitofp i1 %a to float
   ret float %ret
 }
 
 ; CHECK-LABEL: foo2
-; CHECK: setp
-; CHECK: selp
-; CHECK: cvt.rn.f32.s32
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.s32 %[[R:r[0-9]+]], -1, 0, %[[P]];
+; CHECK: cvt.rn.f32.s32 %f{{.*}}, %[[R]]
 define float @foo2(i1 %a) {
   %ret = sitofp i1 %a to float
   ret float %ret
 }
 
 ; CHECK-LABEL: foo3
-; CHECK: setp
-; CHECK: selp
-; CHECK: cvt.rn.f64.u32
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.u32 %[[R:r[0-9]+]], 1, 0, %[[P]];
+; CHECK: cvt.rn.f64.u32 %fd{{.*}}, %[[R]]
 define double @foo3(i1 %a) {
   %ret = uitofp i1 %a to double
   ret double %ret
 }
 
 ; CHECK-LABEL: foo4
-; CHECK: setp
-; CHECK: selp
-; CHECK: cvt.rn.f64.s32
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.s32 %[[R:r[0-9]+]], -1, 0, %[[P]];
+; CHECK: cvt.rn.f64.s32 %fd{{.*}}, %[[R]]
 define double @foo4(i1 %a) {
   %ret = sitofp i1 %a to double
   ret double %ret
 }
+
+; CHECK-LABEL: foo5
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.u32 %[[R:r[0-9]+]], 1, 0, %[[P]];
+; CHECK: cvt.rn.f16.u32 %{{.*}}, %[[R]]
+define half @foo5(i1 %a) {
+  %ret = uitofp i1 %a to half
+  ret half %ret
+}
+
+; CHECK-LABEL: foo6
+; CHECK: setp.eq.b16 %[[P:p[0-9]+]], %{{.*}}, 1;
+; CHECK: selp.s32 %[[R:r[0-9]+]], -1, 0, %[[P]];
+; CHECK: cvt.rn.f16.s32 %{{.*}}, %[[R]]
+define half @foo6(i1 %a) {
+  %ret = sitofp i1 %a to half
----------------
LewisCrawford wrote:

Thanks for the review! :)

Would you or @AlexMaclean be able to merge this PR for me? (I don't have commit access to the llvm repo yet)

https://github.com/llvm/llvm-project/pull/110866