nir: Switch to using 1-bit Booleans for almost everything

This is a squash of a few distinct changes:

    glsl,spirv: Generate 1-bit Booleans

    Revert "Use 32-bit opcodes in the NIR producers and optimizations"

    Revert "nir/builder: Generate 32-bit bool opcodes transparently"

    nir/builder: Generate 1-bit Booleans in nir_build_imm_bool

Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Tested-by: Bas Nieuwenhuizen <[email protected]>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/compiler/nir/nir_builder.h b/src/compiler/nir/nir_builder.h
index d8abb7fd027..826e549019a 100644
--- a/src/compiler/nir/nir_builder.h
+++ b/src/compiler/nir/nir_builder.h
@@ -212,9 +212,9 @@ nir_imm_bool(nir_builder *build, bool x)
    nir_const_value v;
 
    memset(&v, 0, sizeof(v));
-   v.u32[0] = x ? NIR_TRUE : NIR_FALSE;
+   v.b[0] = x;
 
-   return nir_build_imm(build, 1, 32, v);
+   return nir_build_imm(build, 1, 1, v);
 }
 
 static inline nir_ssa_def *
@@ -976,13 +976,13 @@ nir_load_param(nir_builder *build, uint32_t param_idx)
 static inline nir_ssa_def *
 nir_f2b(nir_builder *build, nir_ssa_def *f)
 {
-   return nir_f2b32(build, f);
+   return nir_f2b1(build, f);
 }
 
 static inline nir_ssa_def *
 nir_i2b(nir_builder *build, nir_ssa_def *i)
 {
-   return nir_i2b32(build, i);
+   return nir_i2b1(build, i);
 }
 
 static inline nir_ssa_def *