Merge pull request #3011 from cfallin/bint-x64

Fix `bint` on x64, and make `bextend` consistent with bool representation.

cranelift/filetests/filetests/isa/x64/bextend.clif

@@ -0,0 +1,16 @@
+test compile
+target x86_64 machinst
+
+function %f0(b8) -> b64 {
+block0(v0: b8):
+  v1 = bextend.b64 v0
+  return v1
+}
+
+; check:  pushq   %rbp
+; nextln: movq    %rsp, %rbp
+; nextln: movsbq  %dil, %rsi
+; nextln: movq    %rsi, %rax
+; nextln: movq    %rbp, %rsp
+; nextln: popq    %rbp
+; nextln: ret

cranelift/filetests/filetests/isa/x64/cmp-mem-bug.clif

@@ -11,7 +11,7 @@ block0(v0: i64, v1: i64):
     v4 = bint.i64 v3
 ; nextln: cmpq    %rax, %rdi
 ; nextln: setz    %cl
-; nextln: movzbq  %cl, %rcx
+; nextln: andq    $$1, %rcx
 
     v5 = select.i64 v3, v0, v1
 ; nextln: cmpq    %rax, %rdi
@@ -34,7 +34,7 @@ block0(v0: f64, v1: i64):
 ; nextln: setnp   %dil
 ; nextln: setz    %sil
 ; nextln: andl    %edi, %esi
-; nextln: movzbq  %sil, %rsi
+; nextln: andq    $$1, %rsi
 
     v5 = select.f64 v3, v0, v0
 ; nextln: ucomisd %xmm1, %xmm0

cranelift/filetests/filetests/isa/x64/i128.clif

@@ -463,7 +463,8 @@ block0(v0: b1):
     v1 = bint.i128 v0
     return v1
 
-; check:  movzbq  %dil, %rsi
+; nextln: movq    %rdi, %rsi
+; nextln: andq    $$1, %rsi
 ; nextln: xorq    %rdi, %rdi
 ; nextln: movq    %rsi, %rax
 ; nextln: movq    %rdi, %rdx

cranelift/filetests/filetests/runtests/bint.clif

@@ -0,0 +1,37 @@
+test run
+target aarch64
+target x86_64 machinst
+
+function %bint_b8_i16_true() -> i16 {
+block0:
+  v0 = bconst.b8 true
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b8_i16_true() == 1
+
+
+function %bint_b16_i16_true() -> i16 {
+block0:
+  v0 = bconst.b16 true
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b16_i16_true() == 1
+
+function %bint_b8_i16_false() -> i16 {
+block0:
+  v0 = bconst.b8 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b8_i16_false() == 0
+
+
+function %bint_b16_i16_false() -> i16 {
+block0:
+  v0 = bconst.b16 false
+  v1 = bint.i16 v0
+  return v1
+}
+; run: %bint_b16_i16_false() == 0

cranelift/filetests/filetests/runtests/i128-bint.clif

@@ -0,0 +1,11 @@
+test run
+target x86_64 machinst
+
+function %bint_b8_i128() -> i64, i64 {
+block0:
+  v0 = bconst.b8 true
+  v1 = bint.i128 v0
+  v2, v3 = isplit.i128 v1
+  return v2, v3
+}
+; run: %bint_b8_i128() == [1, 0]