Changes in directory llvm/lib/Target:
TargetAsmInfo.cpp updated: 1.6 -> 1.7
---
Log message:
Expose method and ivars for measuring inline asm length properly.
---
Diffs of the changes: (+18 -2)
TargetAsmInfo.cpp | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
Index: llvm/lib/Target/TargetAsmInfo.cpp
diff -u llvm/lib/Target/TargetAsmInfo.cpp:1.6
llvm/lib/Target/TargetAsmInfo.cpp:1.7
--- llvm/lib/Target/TargetAsmInfo.cpp:1.6 Wed Oct 4 22:13:59 2006
+++ llvm/lib/Target/TargetAsmInfo.cpp Fri Oct 13 12:50:07 2006
@@ -21,6 +21,8 @@
DataSection(".data"),
AddressSize(4),
NeedsSet(false),
+ MaxInstLength(4),
+ SeparatorChar(';'),
CommentString("#"),
GlobalPrefix(""),
PrivateGlobalPrefix("."),
@@ -71,8 +73,22 @@
DwarfLocSection(".debug_loc"),
DwarfARangesSection(".debug_aranges"),
DwarfRangesSection(".debug_ranges"),
- DwarfMacInfoSection(".debug_macinfo")
-{}
+ DwarfMacInfoSection(".debug_macinfo") {
+}
TargetAsmInfo::~TargetAsmInfo() {
}
+
+/// Measure the specified inline asm to determine an approximation of its
+/// length.
+unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
+ // Count the number of instructions in the asm.
+ unsigned NumInsts = 0;
+ for (; *Str; ++Str) {
+ if (*Str == '\n' || *Str == SeparatorChar)
+ ++NumInsts;
+ }
+
+ // Multiply by the worst-case length for each instruction.
+ return NumInsts * MaxInstLength;
+}
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