[llvm] [SelectionDAG][RISCV] Support STACK/PATCHPOINT in SoftenFloatOperand. (PR #165922)

[Matt Arsenault via llvm-commits]

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@@ -379,6 +383,60 @@ define void @needsStackRealignment() {
 }
 declare void @escape_values(...)
 
+; CHECK-LABEL:  .word   .L{{.*}}-floats
+; CHECK-NEXT:   .half   0
+; Num Locations
+; CHECK-NEXT:   .half   6
+; Loc 0: constant float as constant integer
+; CHECK-NEXT:   .byte   4
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+; Loc 0: constant double as large constant integer
+; CHECK-NEXT:   .byte   5
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+; Loc 1: float value in X register
+; CHECK-NEXT:   .byte   1
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   10
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+; Loc 2: double value in X register
+; CHECK-NEXT:   .byte   1
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   11
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+; Loc 3: float on stack
+; CHECK-NEXT:   .byte   2
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   2
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+; Loc 4: double on stack
+; CHECK-NEXT:   .byte   2
+; CHECK-NEXT:   .byte   0
+; CHECK-NEXT:   .half   8
+; CHECK-NEXT:   .half   2
+; CHECK-NEXT:   .half   0
+; CHECK-NEXT:   .word
+define void @floats(float %f, double %g) {
+  %ff = alloca float
+  %gg = alloca double
+  call void (i64, i32, ...) @llvm.experimental.stackmap(i64 888, i32 0, float 1.25,
+    double 1.5, float %f, double %g, ptr %ff, ptr %gg)
+  ret void
+}
+
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arsenm wrote:

Might as well test half and bfloat too? 

https://github.com/llvm/llvm-project/pull/165922