From: Anton Korobeynikov <anton@korobeynikov.info>
Date: Fri, 25 Jan 2019 08:51:53 +0000 (+0000)
Subject: [MSP430] Ajust f32/f64 alignment according to MSP430 EABI
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eba0c57f16ada7fd52d840bd51e0be3a7e19f8a5;p=clang

[MSP430] Ajust f32/f64 alignment according to MSP430 EABI

Patch by Kristina Bessonova!

Differential Revision: https://reviews.llvm.org/D57015


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@352177 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Basic/Targets/MSP430.h b/lib/Basic/Targets/MSP430.h
index 185a537638..620f12d2b8 100644
--- a/lib/Basic/Targets/MSP430.h
+++ b/lib/Basic/Targets/MSP430.h
@@ -33,6 +33,10 @@ public:
     LongWidth = 32;
     LongLongWidth = 64;
     LongAlign = LongLongAlign = 16;
+    FloatWidth = 32;
+    FloatAlign = 16;
+    DoubleWidth = LongDoubleWidth = 64;
+    DoubleAlign = LongDoubleAlign = 16;
     PointerWidth = 16;
     PointerAlign = 16;
     SuitableAlign = 16;
@@ -51,6 +55,8 @@ public:
     return None;
   }
 
+  bool allowsLargerPreferedTypeAlignment() const override { return false; }
+
   bool hasFeature(StringRef Feature) const override {
     return Feature == "msp430";
   }
diff --git a/test/CodeGen/msp430-align.c b/test/CodeGen/msp430-align.c
new file mode 100644
index 0000000000..72de87b3bb
--- /dev/null
+++ b/test/CodeGen/msp430-align.c
@@ -0,0 +1,23 @@
+// RUN: %clang_cc1 -triple msp430-elf -emit-llvm %s -o - | FileCheck %s
+
+// MSP430 target prefers chars to be aligned to 8 bit and other types to 16 bit.
+
+// CHECK: @c ={{.*}}global i8 1, align 1
+// CHECK: @s ={{.*}}global i16 266, align 2
+// CHECK: @i ={{.*}}global i16 266, align 2
+// CHECK: @l ={{.*}}global i32 16909060, align 2
+// CHECK: @ll ={{.*}}global i64 283686952306183, align 2
+// CHECK: @f ={{.*}}global float 1.000000e+00, align 2
+// CHECK: @d ={{.*}}global double 1.000000e+00, align 2
+// CHECK: @ld ={{.*}}global double 1.000000e+00, align 2
+// CHECK: @p ={{.*}}global i8* @c, align 2
+
+char c = 1;
+short s = 266;
+int i = 266;
+long l = 16909060;
+long long ll = 283686952306183;
+float f = 1.0f;
+double d = 1.0;
+long double ld = 1.0;
+char *p = &c;
diff --git a/test/Preprocessor/init.c b/test/Preprocessor/init.c
index fc8692b522..366dc96aa5 100644
--- a/test/Preprocessor/init.c
+++ b/test/Preprocessor/init.c
@@ -5158,7 +5158,7 @@
 // MSP430:#define __SIZE_MAX__ 65535U
 // MSP430:#define __SIZE_TYPE__ unsigned int
 // MSP430:#define __SIZE_WIDTH__ 16
-// MSP430-CXX:#define __STDCPP_DEFAULT_NEW_ALIGNMENT__ 8U
+// MSP430-CXX:#define __STDCPP_DEFAULT_NEW_ALIGNMENT__ 2U
 // MSP430:#define __UINT16_C_SUFFIX__ U
 // MSP430:#define __UINT16_MAX__ 65535U
 // MSP430:#define __UINT16_TYPE__ unsigned short