Index: gcc/gcc/df-byte-scan.c |
diff --git a/gcc/gcc/df-byte-scan.c b/gcc/gcc/df-byte-scan.c |
index 7e4db4b35bc2c896192edc68ba902528170e8ce5..8271465041e01a3ca7d7071a8586c23cd22f9ef7 100644 |
--- a/gcc/gcc/df-byte-scan.c |
+++ b/gcc/gcc/df-byte-scan.c |
@@ -43,12 +43,12 @@ along with GCC; see the file COPYING3. If not see |
/* Helper for df_compute_accessed_bytes. Ref is some sort of extract. |
Return true if this effects the entire reg in REF. Return false if |
otherwise and set START_BYTE and LAST_BYTE. See the description of |
- df_compute_accessed_bytes for a description of MM. */ |
+ df_compute_accessed_bytes for a description of MM. */ |
-static bool |
+static bool |
df_compute_accessed_bytes_extract (df_ref ref, |
enum df_mm mm , |
- unsigned int *start_byte, |
+ unsigned int *start_byte, |
unsigned int *last_byte) |
{ |
int start; |
@@ -61,12 +61,12 @@ df_compute_accessed_bytes_extract (df_ref ref, |
/* (*_extract:M1 (reg:M2 X) WIDTH POS) |
(*_extract:M1 (subreg:M1 (reg:M2 X N) WIDTH POS) |
- |
+ |
This is a bitfield extraction. The assignment clobbers/extracts |
exactly the bits named by WIDTH and POS and does not affect the |
other bits in register X. It is also technically possible that |
the bits asked for are longer than units per word. */ |
- |
+ |
int offset = DF_REF_EXTRACT_OFFSET (ref); |
int width = DF_REF_EXTRACT_WIDTH (ref); |
@@ -134,9 +134,9 @@ df_compute_accessed_bytes_extract (df_ref ref, |
last = m2_size; |
if (dump_file) |
- fprintf (dump_file, " cpb extract regno=%d start=%d last=%d\n", |
+ fprintf (dump_file, " cpb extract regno=%d start=%d last=%d\n", |
DF_REF_REGNO (ref), start, last); |
- |
+ |
*start_byte = start; |
*last_byte = last; |
return false; |
@@ -145,11 +145,11 @@ df_compute_accessed_bytes_extract (df_ref ref, |
/* Helper for df_compute_accessed_bytes. Ref is a strict_low_part. |
Return true if this effects the entire reg in REF. Return false if |
- otherwise and set START_BYTE and LAST_BYTE. */ |
+ otherwise and set START_BYTE and LAST_BYTE. */ |
-static bool |
-df_compute_accessed_bytes_strict_low_part (df_ref ref, |
- unsigned int *start_byte, |
+static bool |
+df_compute_accessed_bytes_strict_low_part (df_ref ref, |
+ unsigned int *start_byte, |
unsigned int *last_byte) |
{ |
int start; |
@@ -177,17 +177,17 @@ df_compute_accessed_bytes_strict_low_part (df_ref ref, |
gcc_assert (m1_size <= m2_size); |
/* (set (strict_low_part (subreg:M1 (reg:M2 X) N)) ...) |
- |
+ |
This is a bitfield insertion. The assignment clobbers exactly the |
bits named by the subreg--the M1 bits at position N. It is also |
technically possible that the bits asked for are longer than units |
per word. */ |
- |
+ |
start = offset; |
last = offset + m1_size; |
if (dump_file) |
- fprintf (dump_file, " cpb strict low part regno=%d start=%d last=%d\n", |
+ fprintf (dump_file, " cpb strict low part regno=%d start=%d last=%d\n", |
DF_REF_REGNO (ref), start, last); |
*start_byte = start; |
@@ -197,10 +197,10 @@ df_compute_accessed_bytes_strict_low_part (df_ref ref, |
/* Helper for df_compute_accessed_bytes. Ref is a naked subreg. |
Return true if this effects the entire reg in REF. Return false if |
- otherwise and set START_BYTE and LAST_BYTE. */ |
+ otherwise and set START_BYTE and LAST_BYTE. */ |
-static bool |
-df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
+static bool |
+df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
unsigned int *last_byte) |
{ |
@@ -231,7 +231,7 @@ df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
/* Defs and uses are different in the amount of the reg that touch. */ |
if (DF_REF_REG_DEF_P (ref)) |
{ |
- /* This is an lvalue. */ |
+ /* This is an lvalue. */ |
if (m2_size > UNITS_PER_WORD) |
{ |
@@ -239,23 +239,23 @@ df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
Look at the bytes named by the subreg, and expand it to |
cover a UNITS_PER_WORD part of register X. That part of |
register X is clobbered, the rest is not. |
- |
+ |
E.g., (subreg:SI (reg:DI X) 0), where UNITS_PER_WORD is the |
size of SImode, clobbers the first SImode part of X, and does |
not affect the second SImode part. |
- |
+ |
E.g., (subreg:QI (reg:DI X) 0), where UNITS_PER_WORD is the |
size of SImode, clobbers the first SImode part of X, and does |
not affect the second SImode part. Here the QImode byte is |
expanded to a UNITS_PER_WORD portion of the register for |
purposes of determining what is clobbered. |
- |
+ |
If this is an rvalue, then it touches just the bytes that it |
talks about. */ |
int offset = SUBREG_BYTE (reg); |
- |
+ |
start = offset & ~(UNITS_PER_WORD - 1); |
- last = (offset + m1_size + UNITS_PER_WORD - 1) |
+ last = (offset + m1_size + UNITS_PER_WORD - 1) |
& ~(UNITS_PER_WORD - 1); |
} |
else |
@@ -264,7 +264,7 @@ df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
X. */ |
return true; |
} |
- else |
+ else |
{ |
/* This is an rvalue. It touches just the bytes they explicitly |
mentioned. */ |
@@ -272,9 +272,9 @@ df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
start = offset; |
last = start + m1_size; |
} |
- |
+ |
if (dump_file) |
- fprintf (dump_file, " cpb subreg regno=%d start=%d last=%d\n", |
+ fprintf (dump_file, " cpb subreg regno=%d start=%d last=%d\n", |
DF_REF_REGNO (ref), start, last); |
*start_byte = start; |
@@ -299,15 +299,15 @@ df_compute_accessed_bytes_subreg (df_ref ref, unsigned int *start_byte, |
in, START_BYTE and LAST_BYTE are set to 0 and false is returned. |
This means that this use can be ignored. */ |
-bool |
-df_compute_accessed_bytes (df_ref ref, enum df_mm mm, |
- unsigned int *start_byte, |
+bool |
+df_compute_accessed_bytes (df_ref ref, enum df_mm mm, |
+ unsigned int *start_byte, |
unsigned int *last_byte) |
{ |
if (!dbg_cnt (df_byte_scan)) |
return true; |
- if (!DF_REF_REG_DEF_P (ref) |
+ if (!DF_REF_REG_DEF_P (ref) |
&& DF_REF_FLAGS_IS_SET (ref, DF_REF_READ_WRITE)) |
{ |
if (DF_REF_FLAGS_IS_SET (ref, DF_REF_PRE_POST_MODIFY)) |
@@ -331,7 +331,7 @@ df_compute_accessed_bytes (df_ref ref, enum df_mm mm, |
if (DF_REF_FLAGS_IS_SET (ref, DF_REF_SIGN_EXTRACT | DF_REF_ZERO_EXTRACT)) |
return df_compute_accessed_bytes_extract (ref, mm, start_byte, last_byte); |
else if (DF_REF_FLAGS_IS_SET (ref, DF_REF_STRICT_LOW_PART)) |
- return df_compute_accessed_bytes_strict_low_part (ref, |
+ return df_compute_accessed_bytes_strict_low_part (ref, |
start_byte, last_byte); |
else if (GET_CODE (DF_REF_REG (ref)) == SUBREG) |
return df_compute_accessed_bytes_subreg (ref, start_byte, last_byte); |