diff options
| -rw-r--r-- | src/mesa/shader/prog_optimize.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/mesa/shader/prog_optimize.c b/src/mesa/shader/prog_optimize.c index 5f35dbf128..6ba2e76ff9 100644 --- a/src/mesa/shader/prog_optimize.c +++ b/src/mesa/shader/prog_optimize.c @@ -660,7 +660,8 @@ find_live_intervals(struct gl_program *prog, } -static GLuint +/** Scan the array of used register flags to find free entry */ +static GLint alloc_register(GLboolean usedRegs[MAX_PROGRAM_TEMPS]) { GLuint k; @@ -670,7 +671,7 @@ alloc_register(GLboolean usedRegs[MAX_PROGRAM_TEMPS]) return k; } } - return MAX_PROGRAM_TEMPS; + return -1; } @@ -689,7 +690,7 @@ _mesa_reallocate_registers(struct gl_program *prog) GLint registerMap[MAX_PROGRAM_TEMPS]; GLboolean usedRegs[MAX_PROGRAM_TEMPS]; GLuint i; - GLuint maxTemp = 0; + GLint maxTemp = -1; if (dbg) { _mesa_printf("Optimize: Begin live-interval register reallocation\n"); @@ -754,15 +755,15 @@ _mesa_reallocate_registers(struct gl_program *prog) /* find a free register for this live interval */ { - const GLuint k = alloc_register(usedRegs); - if (k == MAX_PROGRAM_TEMPS) { + const GLint k = alloc_register(usedRegs); + if (k < 0) { /* out of registers, give up */ return; } registerMap[live->Reg] = k; maxTemp = MAX2(maxTemp, k); if (dbg) - _mesa_printf(" remap register %d -> %d\n", live->Reg, k); + _mesa_printf(" remap register %u -> %d\n", live->Reg, k); } /* Insert this live interval into the active list which is sorted |